Merge branch 'stable-3.11' into stable-3.12

* stable-3.11:
  Log cancelled fetch collisions without reschedule
  Add per-project shared lock to avoid fetch collisions
  Revert "Prevent concurrent fetches on the same repository"
  Revert "Extract QueueInfo into its own class"
  Extract QueueInfo into its own class
  Throw LockFailureException from filterAndLock interface
  Expose new constructor for LockFailureException
  Prevent concurrent fetches on the same repository

Change-Id: I0adf7d7984887c4672e56698ff9412605322a8bc

README.md

diff --git a/src/main/resources/Documentation/about.md b/README.md
similarity index 65%
rename from src/main/resources/Documentation/about.md
rename to README.md
index 247ff23..c7ee16a 100644
--- a/src/main/resources/Documentation/about.md
+++ b/README.md
@@ -1,25 +1,32 @@
+# Gerrit pull-replication plugin
+
 This plugin can automatically mirror repositories from other systems.
 
 Overview
 --------
 
 Typically replication should be done over SSH, with a passwordless
-public/private key pair.  On a trusted network it is also possible to
+public/private key pair. On a trusted network it is also possible to
 use replication over the insecure (but much faster due to no
 authentication overhead or encryption) git:// protocol, by enabling
 the `upload-pack` service on the receiving system, but this
-configuration is not recommended.  It is also possible to specify a
-local path as replication source. This makes e.g. sense if a network
+configuration is not recommended. It is also possible to specify a
+local path as replication source. This makes sense if a network
 share is mounted to which the repositories should be replicated from.
 
-Access
-------
+## Access
+
 
 To be allowed to trigger pull replication a user must be a member of a
 group that is granted the 'Pull Replication' capability (provided
 by this plugin) or the 'Administrate Server' capability.
 
-Change Indexing
---------
+## Change Indexing
+
 
 Changes will be automatically indexed upon replication.
+
+
+For more information please refer to the [docs](src/main/resources/Documentation)
+
+

example-setup/broker/Dockerfile

diff --git a/example-setup/broker/Dockerfile b/example-setup/broker/Dockerfile
index 9c09461..e9abc46 100644
--- a/example-setup/broker/Dockerfile
+++ b/example-setup/broker/Dockerfile
@@ -1,4 +1,4 @@
-FROM gerritcodereview/gerrit:3.11.4
+FROM gerritcodereview/gerrit:3.12.1
 
 USER root
 

example-setup/http/Dockerfile

diff --git a/example-setup/http/Dockerfile b/example-setup/http/Dockerfile
index 18d88ec..cb4d765 100644
--- a/example-setup/http/Dockerfile
+++ b/example-setup/http/Dockerfile
@@ -1,4 +1,4 @@
-FROM gerritcodereview/gerrit:3.11.4
+FROM gerritcodereview/gerrit:3.12.1
 
 USER root