Merge branch 'stable-3.4'

* stable-3.4:
  Bump Gerrit to v3.4.1 in docker tests

Change-Id: I6f43957e1a4b9d38c877f5299a0c0e914a237ead
diff --git a/src/test/docker/gerrit/Dockerfile b/src/test/docker/gerrit/Dockerfile
index 7269a3a..6834f57 100644
--- a/src/test/docker/gerrit/Dockerfile
+++ b/src/test/docker/gerrit/Dockerfile
@@ -1,6 +1,6 @@
-FROM gerritcodereview/gerrit:3.3.7 
+FROM gerritcodereview/gerrit:3.4.1
 
-ENV GERRIT_BRANCH=stable-3.3
+ENV GERRIT_BRANCH=stable-3.4
 
 ENV GERRIT_CI_URL=https://gerrit-ci.gerritforge.com/job