Add Gerrit migrations step-by-step presentation
The presentation on how to approach and organise Gerrit
migrations has been staged at the Gerrit User Summit 2019
in Gothenburg and Sunnyvale CA.
Change-Id: Ied13070418ea9469b199123c32396d9b0e2bb69f
diff --git a/pages/site/community/presentations.md b/pages/site/community/presentations.md
index d5d7051..e058690 100644
--- a/pages/site/community/presentations.md
+++ b/pages/site/community/presentations.md
@@ -86,6 +86,7 @@
## Upgrades
* [Discuss upgrade complexity](https://docs.google.com/presentation/d/1JbXnXFmKfqurcbt8uic3QIjnwHyIrleI_D2FHtE0u94) (2020)
+* [Gerrit migrations step by step](https://www.slideshare.net/lucamilanesio/gerrit-code-review-migrations-stepbystep) (2019)
* [Upgrading to Gerrit 2.15: a real-life story on GerritHub.io](https://www.slideshare.net/lucamilanesio/gerrithub-a-true-gerrit-migration-story-to-v215) (2018)
* [Zero-downtime Gerrit upgrades](http://www.slideshare.net/lucamilanesio/zerodowntime-gerrit-code-review-upgrades) (2016)
