Merge branch 'stable-3.12' into stable-3.13

* stable-3.12:
  Set GERRIT_BRANCH to stable-3.12

Change-Id: I422e59087ebfc2d80979446c6bb51e8a21f86253

src/test/docker/gerrit/Dockerfile

diff --git a/src/test/docker/gerrit/Dockerfile b/src/test/docker/gerrit/Dockerfile
index 02c3af1..09d3921 100644
--- a/src/test/docker/gerrit/Dockerfile
+++ b/src/test/docker/gerrit/Dockerfile
@@ -11,7 +11,7 @@
     nfs-utils \
     && yum -y clean all
 
-ENV GERRIT_BRANCH master
+ENV GERRIT_BRANCH stable-3.12
 
 # Add gerrit user
 RUN adduser -p -m --uid 1000 gerrit --home-dir /home/gerrit