release-process: update distro baseline & add OpenSSH

Stop tracking Ubuntu Trusty & Xenial and Debian Jessie & Stretch
as they only had Python 3.5 available which we've dropped.

Backfill OpenSSH versions since we've started testing for it.

Change-Id: I03183ed97f6e43dce8a00e36cce2956544a26afc
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/318835
Reviewed-by: Jack Neus <jackneus@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: Mike Frysinger <vapier@google.com>
diff --git a/docs/release-process.md b/docs/release-process.md
index 28f7125..f71a411 100644
--- a/docs/release-process.md
+++ b/docs/release-process.md
@@ -208,85 +208,132 @@
 still support them.
 Things in italics are things we used to care about but probably don't anymore.
 
-|   Date   |     EOL      | [Git][rel-g] | [Python][rel-p] | [Ubuntu][rel-u] / [Debian][rel-d] | Git | Python |
-|:--------:|:------------:|--------------|-----------------|-----------------------------------|-----|--------|
-| Oct 2008 | *Oct 2013*   |              | 2.6.0           | *10.04 Lucid* - 10.10 Maverick / *Squeeze* |
+|   Date   |     EOL      | [Git][rel-g] | [Python][rel-p] | [SSH][rel-o] | [Ubuntu][rel-u] / [Debian][rel-d] | Git | Python | SSH |
+|:--------:|:------------:|:------------:|:---------------:|:------------:|-----------------------------------|-----|--------|-----|
+| Apr 2008 |              |              |                 | 5.0          |
+| Jun 2008 |              |              |                 | 5.1          |
+| Oct 2008 | *Oct 2013*   |              | 2.6.0           |              | *10.04 Lucid* - 10.10 Maverick / *Squeeze* |
 | Dec 2008 | *Feb 2009*   |              | 3.0.0           |
-| Feb 2009 | *Mar 2012*   |              |                 | Debian 5 Lenny       | 1.5.6.5 | 2.5.2 |
-| Jun 2009 | *Jun 2016*   |              | 3.1.0           | *10.04 Lucid* - 10.10 Maverick / *Squeeze* |
-| Feb 2010 | *Oct 2012*   | 1.7.0        |                 | *10.04 Lucid* - *12.04 Precise* - 12.10 Quantal |
-| Apr 2010 | *Apr 2015*   |              |                 | *10.04 Lucid*        | 1.7.0.4  | 2.6.5 3.1.2  |
-| Jul 2010 | *Dec 2019*   |              | **2.7.0**       | 11.04 Natty - **<current>** |
-| Oct 2010 |              |              |                 | 10.10 Maverick       | 1.7.1    | 2.6.6 3.1.3  |
-| Feb 2011 | *Feb 2016*   |              |                 | Debian 6 Squeeze     | 1.7.2.5  | 2.6.6 3.1.3  |
-| Apr 2011 |              |              |                 | 11.04 Natty          | 1.7.4    | 2.7.1 3.2.0  |
-| Oct 2011 | *Feb 2016*   |              | 3.2.0           | 11.04 Natty - 12.10 Quantal |
-| Oct 2011 |              |              |                 | 11.10 Ocelot         | 1.7.5.4  | 2.7.2 3.2.2  |
-| Apr 2012 | *Apr 2019*   |              |                 | *12.04 Precise*      | 1.7.9.5  | 2.7.3 3.2.3  |
-| Sep 2012 | *Sep 2017*   |              | 3.3.0           | 13.04 Raring - 13.10 Saucy |
-| Oct 2012 | *Dec 2014*   | 1.8.0        |                 | 13.04 Raring - 13.10 Saucy |
-| Oct 2012 |              |              |                 | 12.10 Quantal        | 1.7.10.4 | 2.7.3 3.2.3  |
-| Apr 2013 |              |              |                 | 13.04 Raring         | 1.8.1.2  | 2.7.4 3.3.1  |
-| May 2013 | *May 2018*   |              |                 | Debian 7 Wheezy      | 1.7.10.4 | 2.7.3 3.2.3  |
-| Oct 2013 |              |              |                 | 13.10 Saucy          | 1.8.3.2  | 2.7.5 3.3.2  |
-| Feb 2014 | *Dec 2014*   | **1.9.0**    |                 | **14.04 Trusty** |
-| Mar 2014 | *Mar 2019*   |              | **3.4.0**       | **14.04 Trusty** - 15.10 Wily / **Jessie** |
-| Apr 2014 | **Apr 2022** |              |                 | **14.04 Trusty**     | 1.9.1    | 2.7.5 3.4.0  |
+| Feb 2009 |              |              |                 | 5.2          |
+| Feb 2009 | *Mar 2012*   |              |                 |              | Debian 5 Lenny       | 1.5.6.5 | 2.5.2 |
+| Jun 2009 | *Jun 2016*   |              | 3.1.0           |              | *10.04 Lucid* - 10.10 Maverick / *Squeeze* |
+| Sep 2009 |              |              |                 | 5.3          | *10.04 Lucid* |
+| Feb 2010 | *Oct 2012*   | 1.7.0        |                 |              | *10.04 Lucid* - *12.04 Precise* - 12.10 Quantal |
+| Mar 2010 |              |              |                 | 5.4          |
+| Apr 2010 |              |              |                 | 5.5          | 10.10 Maverick |
+| Apr 2010 | *Apr 2015*   |              |                 |              | *10.04 Lucid*        | 1.7.0.4  | 2.6.5 3.1.2  | 5.3 |
+| Jul 2010 | *Dec 2019*   |              | *2.7.0*         |              | 11.04 Natty - *<current>* |
+| Aug 2010 |              |              |                 | 5.6          |
+| Oct 2010 |              |              |                 |              | 10.10 Maverick       | 1.7.1    | 2.6.6 3.1.3  | 5.5 |
+| Jan 2011 |              |              |                 | 5.7          |
+| Feb 2011 |              |              |                 | 5.8          | 11.04 Natty |
+| Feb 2011 | *Feb 2016*   |              |                 |              | Debian 6 Squeeze     | 1.7.2.5  | 2.6.6 3.1.3  |
+| Apr 2011 |              |              |                 |              | 11.04 Natty          | 1.7.4    | 2.7.1 3.2.0  | 5.8 |
+| Sep 2011 |              |              |                 | 5.9          | *12.04 Precise* |
+| Oct 2011 | *Feb 2016*   |              | 3.2.0           |              | 11.04 Natty - 12.10 Quantal |
+| Oct 2011 |              |              |                 |              | 11.10 Ocelot         | 1.7.5.4  | 2.7.2 3.2.2  | 5.8 |
+| Apr 2012 |              |              |                 | 6.0          | 12.10 Quantal |
+| Apr 2012 | *Apr 2019*   |              |                 |              | *12.04 Precise*      | 1.7.9.5  | 2.7.3 3.2.3  | 5.9 |
+| Aug 2012 |              |              |                 | 6.1          | 13.04 Raring |
+| Sep 2012 | *Sep 2017*   |              | 3.3.0           |              | 13.04 Raring - 13.10 Saucy |
+| Oct 2012 | *Dec 2014*   | 1.8.0        |                 |              | 13.04 Raring - 13.10 Saucy |
+| Oct 2012 |              |              |                 |              | 12.10 Quantal        | 1.7.10.4 | 2.7.3 3.2.3  | 6.0 |
+| Mar 2013 |              |              |                 | 6.2          | 13.10 Saucy |
+| Apr 2013 |              |              |                 |              | 13.04 Raring         | 1.8.1.2  | 2.7.4 3.3.1  | 6.1 |
+| May 2013 | *May 2018*   |              |                 |              | Debian 7 Wheezy      | 1.7.10.4 | 2.7.3 3.2.3  |
+| Sep 2013 |              |              |                 | 6.3          |
+| Oct 2013 |              |              |                 |              | 13.10 Saucy          | 1.8.3.2  | 2.7.5 3.3.2  | 6.2 |
+| Nov 2013 |              |              |                 | 6.4          |
+| Jan 2014 |              |              |                 | 6.5          |
+| Feb 2014 | *Dec 2014*   | **1.9.0**    |                 |              | *14.04 Trusty* |
+| Mar 2014 | *Mar 2019*   |              | *3.4.0*         |              | *14.04 Trusty* - 15.10 Wily / *Jessie* |
+| Mar 2014 |              |              |                 | 6.6          | *14.04 Trusty* - 14.10 Utopic |
+| Apr 2014 | *Apr 2022*   |              |                 |              | *14.04 Trusty*       | 1.9.1    | 2.7.5 3.4.0  | 6.6 |
 | May 2014 | *Dec 2014*   | 2.0.0        |
-| Aug 2014 | *Dec 2014*   | **2.1.0**    |                 | 14.10 Utopic - 15.04 Vivid / **Jessie** |
-| Oct 2014 |              |              |                 | 14.10 Utopic         | 2.1.0    | 2.7.8 3.4.2  |
+| Aug 2014 | *Dec 2014*   | *2.1.0*      |                 |              | 14.10 Utopic - 15.04 Vivid / *Jessie* |
+| Oct 2014 |              |              |                 | 6.7          | 15.04 Vivid |
+| Oct 2014 |              |              |                 |              | 14.10 Utopic         | 2.1.0    | 2.7.8 3.4.2  | 6.6 |
 | Nov 2014 | *Sep 2015*   | 2.2.0        |
 | Feb 2015 | *Sep 2015*   | 2.3.0        |
+| Mar 2015 |              |              |                 | 6.8          |
 | Apr 2015 | *May 2017*   | 2.4.0        |
-| Apr 2015 | **Jun 2020** |              |                 | **Debian 8 Jessie**  | 2.1.4    | 2.7.9 3.4.2  |
-| Apr 2015 |              |              |                 | 15.04 Vivid          | 2.1.4    | 2.7.9 3.4.3  |
-| Jul 2015 | *May 2017*   | 2.5.0        |                 | 15.10 Wily |
+| Apr 2015 | *Jun 2020*   |              |                 |              | *Debian 8 Jessie*    | 2.1.4    | 2.7.9 3.4.2  |
+| Apr 2015 |              |              |                 |              | 15.04 Vivid          | 2.1.4    | 2.7.9 3.4.3  | 6.7 |
+| Jul 2015 | *May 2017*   | 2.5.0        |                 |              | 15.10 Wily |
+| Jul 2015 |              |              |                 | 6.9          | 15.10 Wily |
+| Aug 2015 |              |              |                 | 7.0          |
+| Aug 2015 |              |              |                 | 7.1          |
 | Sep 2015 | *May 2017*   | 2.6.0        |
-| Sep 2015 | **Sep 2020** |              | **3.5.0**       | **16.04 Xenial** - 17.04 Zesty / **Stretch** |
-| Oct 2015 |              |              |                 | 15.10 Wily           | 2.5.0    | 2.7.9 3.4.3  |
-| Jan 2016 | *Jul 2017*   | **2.7.0**    |                 | **16.04 Xenial** |
+| Sep 2015 | *Sep 2020*   |              | *3.5.0*         |              | *16.04 Xenial* - 17.04 Zesty / *Stretch* |
+| Oct 2015 |              |              |                 |              | 15.10 Wily           | 2.5.0    | 2.7.9 3.4.3  | 6.9 |
+| Jan 2016 | *Jul 2017*   | *2.7.0*      |                 |              | *16.04 Xenial* |
+| Feb 2016 |              |              |                 | 7.2          | *16.04 Xenial* |
 | Mar 2016 | *Jul 2017*   | 2.8.0        |
-| Apr 2016 | **Apr 2024** |              |                 | **16.04 Xenial**     | 2.7.4    | 2.7.11 3.5.1 |
-| Jun 2016 | *Jul 2017*   | 2.9.0        |                 | 16.10 Yakkety |
+| Apr 2016 | *Apr 2024*   |              |                 |              | *16.04 Xenial*       | 2.7.4    | 2.7.11 3.5.1 | 7.2 |
+| Jun 2016 | *Jul 2017*   | 2.9.0        |                 |              | 16.10 Yakkety |
+| Jul 2016 |              |              |                 | 7.3          | 16.10 Yakkety |
 | Sep 2016 | *Sep 2017*   | 2.10.0       |
-| Oct 2016 |              |              |                 | 16.10 Yakkety        | 2.9.3    | 2.7.11 3.5.1 |
-| Nov 2016 | *Sep 2017*   | **2.11.0**   |                 | 17.04 Zesty / **Stretch** |
-| Dec 2016 | **Dec 2021** |              | **3.6.0**       | 17.10 Artful - **18.04 Bionic** - 18.10 Cosmic |
+| Oct 2016 |              |              |                 |              | 16.10 Yakkety        | 2.9.3    | 2.7.11 3.5.1 | 7.3 |
+| Nov 2016 | *Sep 2017*   | *2.11.0*     |                 |              | 17.04 Zesty / *Stretch* |
+| Dec 2016 | **Dec 2021** |              | **3.6.0**       |              | 17.10 Artful - **18.04 Bionic** - 18.10 Cosmic |
+| Dec 2016 |              |              |                 | 7.4          | 17.04 Zesty / *Debian 9 Stretch* |
 | Feb 2017 | *Sep 2017*   | 2.12.0       |
-| Apr 2017 |              |              |                 | 17.04 Zesty          | 2.11.0   | 2.7.13 3.5.3 |
+| Mar 2017 |              |              |                 | 7.5          | 17.10 Artful |
+| Apr 2017 |              |              |                 |              | 17.04 Zesty          | 2.11.0   | 2.7.13 3.5.3 | 7.4 |
 | May 2017 | *May 2018*   | 2.13.0       |
-| Jun 2017 | **Jun 2022** |              |                 | **Debian 9 Stretch** | 2.11.0   | 2.7.13 3.5.3 |
-| Aug 2017 | *Dec 2019*   | 2.14.0       |                 | 17.10 Artful |
+| Jun 2017 | *Jun 2022*   |              |                 |              | *Debian 9 Stretch*   | 2.11.0   | 2.7.13 3.5.3 | 7.4 |
+| Aug 2017 | *Dec 2019*   | 2.14.0       |                 |              | 17.10 Artful |
 | Oct 2017 | *Dec 2019*   | 2.15.0       |
-| Oct 2017 |              |              |                 | 17.10 Artful         | 2.14.1   | 2.7.14 3.6.3 |
+| Oct 2017 |              |              |                 | 7.6          | **18.04 Bionic** |
+| Oct 2017 |              |              |                 |              | 17.10 Artful         | 2.14.1   | 2.7.14 3.6.3 | 7.5 |
 | Jan 2018 | *Dec 2019*   | 2.16.0       |
-| Apr 2018 | *Dec 2019*   | 2.17.0       |                 | **18.04 Bionic**     |
-| Apr 2018 | **Apr 2028** |              |                 | **18.04 Bionic**     | 2.17.0   | 2.7.15 3.6.5 |
-| Jun 2018 | *Dec 2019*   | 2.18.0       |
-| Jun 2018 | **Jun 2023** |              | 3.7.0           | 19.04 Disco - **20.04 Focal** / **Buster** |
-| Sep 2018 | *Dec 2019*   | 2.19.0       |                 | 18.10 Cosmic |
-| Oct 2018 |              |              |                 | 18.10 Cosmic         | 2.19.1   | 2.7.15 3.6.6 |
-| Dec 2018 | *Dec 2019*   | **2.20.0**   |                 | 19.04 Disco / **Buster** |
-| Feb 2019 | *Dec 2019*   | 2.21.0       |
-| Apr 2019 |              |              |                 | 19.04 Disco          | 2.20.1   | 2.7.16 3.7.3 |
+| Apr 2018 | *Mar 2021*   | **2.17.0**   |                 |              | **18.04 Bionic**     |
+| Apr 2018 |              |              |                 | 7.7          | 18.10 Cosmic |
+| Apr 2018 | **Apr 2028** |              |                 |              | **18.04 Bionic**     | 2.17.0   | 2.7.15 3.6.5 | 7.6 |
+| Jun 2018 | *Mar 2021*   | 2.18.0       |
+| Jun 2018 | **Jun 2023** |              | 3.7.0           |              | 19.04 Disco - **20.04 Focal** / **Buster** |
+| Aug 2018 |              |              |                 | 7.8          |
+| Sep 2018 | *Mar 2021*   | 2.19.0       |                 |              | 18.10 Cosmic |
+| Oct 2018 |              |              |                 | 7.9          | 19.04 Disco / **Buster** |
+| Oct 2018 |              |              |                 |              | 18.10 Cosmic         | 2.19.1   | 2.7.15 3.6.6 | 7.7 |
+| Dec 2018 | *Mar 2021*   | **2.20.0**   |                 |              | 19.04 Disco - 19.10 Eoan / **Buster** |
+| Feb 2019 | *Mar 2021*   | 2.21.0       |
+| Apr 2019 |              |              |                 | 8.0          | 19.10 Eoan |
+| Apr 2019 |              |              |                 |              | 19.04 Disco          | 2.20.1   | 2.7.16 3.7.3 | 7.9 |
 | Jun 2019 |              | 2.22.0       |
-| Jul 2019 | **Jul 2024** |              |                 | **Debian 10 Buster** | 2.20.1   | 2.7.16 3.7.3 |
-| Aug 2019 |              | 2.23.0       |
-| Oct 2019 | **Oct 2024** |              | 3.8.0           |
-| Oct 2019 |              |              |                 | 19.10 Eoan           | 2.20.1   | 2.7.17 3.7.5 |
-| Nov 2019 |              | 2.24.0       |
-| Jan 2020 |              | 2.25.0       |                 | **20.04 Focal** |
-| Apr 2020 | **Apr 2030** |              |                 | **20.04 Focal**      | 2.25.0   | 2.7.17 3.7.5 |
-| Oct 2020 | **Oct 2025** |              | 3.9.0           | 21.04 Hirsute / **Bullseye** |
-| Dec 2020 |              | 2.30.0       |                 | 21.04 Hirsute / **Bullseye** |
-| Apr 2021 | *Jan 2022*   |              |                 | 21.04 Hirsute        | 2.30.2   | 2.7.18 3.9.4 |
-| Aug 2021 | **Aug 2026** |              |                 | **Debian 11 Bullseye** | 2.30.2 | 2.7.18 3.9.2 |
-| **Date** |   **EOL**    | **[Git][rel-g]** | **[Python][rel-p]** | **[Ubuntu][rel-u] / [Debian][rel-d]** | **Git** | **Python** |
+| Jul 2019 | **Jul 2024** |              |                 |              | **Debian 10 Buster** | 2.20.1   | 2.7.16 3.7.3 | 7.9 |
+| Aug 2019 | *Mar 2021*   | 2.23.0       |
+| Oct 2019 | **Oct 2024** |              | 3.8.0           |              | **20.04 Focal** - 20.10 Groovy |
+| Oct 2019 |              |              |                 | 8.1          |
+| Oct 2019 |              |              |                 |              | 19.10 Eoan           | 2.20.1   | 2.7.17 3.7.5 | 8.0 |
+| Nov 2019 | *Mar 2021*   | 2.24.0       |
+| Jan 2020 | *Mar 2021*   | 2.25.0       |                 |              | **20.04 Focal** |
+| Feb 2020 |              |              |                 | 8.2          | **20.04 Focal** |
+| Mar 2020 | *Mar 2021*   | 2.26.0       |
+| Apr 2020 | **Apr 2030** |              |                 |              | **20.04 Focal**      | 2.25.1   | 2.7.17 3.8.2 | 8.2 |
+| May 2020 | *Mar 2021*   | 2.27.0       |                 |              | 20.10 Groovy |
+| May 2020 |              |              |                 | 8.3          |
+| Jul 2020 | *Mar 2021*   | 2.28.0       |
+| Sep 2020 |              |              |                 | 8.4          | 21.04 Hirsute / **Bullseye** |
+| Oct 2020 | *Mar 2021*   | 2.29.0       |
+| Oct 2020 |              |              |                 |              | 20.10 Groovy         | 2.27.0   | 2.7.18 3.8.6 | 8.3 |
+| Oct 2020 | **Oct 2025** |              | 3.9.0           |              | 21.04 Hirsute / **Bullseye** |
+| Dec 2020 | *Mar 2021*   | 2.30.0       |                 |              | 21.04 Hirsute / **Bullseye** |
+| Mar 2021 |              | 2.31.0       |
+| Mar 2021 |              |              |                 | 8.5          |
+| Apr 2021 |              |              |                 | 8.6          |
+| Apr 2021 | *Jan 2022*   |              |                 |              | 21.04 Hirsute        | 2.30.2   | 2.7.18 3.9.4 | 8.4 |
+| Jun 2021 |              | 2.32.0       |
+| Aug 2021 |              | 2.33.0       |
+| Aug 2021 |              |              |                 | 8.7          |
+| Aug 2021 | **Aug 2026** |              |                 |              | **Debian 11 Bullseye** | 2.30.2 | 2.7.18 3.9.2 | 8.4 |
+| **Date** |   **EOL**    | **[Git][rel-g]** | **[Python][rel-p]** | **[SSH][rel-o]** | **[Ubuntu][rel-u] / [Debian][rel-d]** | **Git** | **Python** | **SSH** |
 
 
 [contact]: ../README.md#contact
 [rel-d]: https://en.wikipedia.org/wiki/Debian_version_history
 [rel-g]: https://en.wikipedia.org/wiki/Git#Releases
+[rel-o]: https://www.openssh.com/releasenotes.html
 [rel-p]: https://en.wikipedia.org/wiki/History_of_Python#Table_of_versions
 [rel-u]: https://en.wikipedia.org/wiki/Ubuntu_version_history#Table_of_versions
 [example announcement]: https://groups.google.com/d/topic/repo-discuss/UGBNismWo1M/discussion