Build replication-status plugin on stable-3.13

Change-Id: Id6797d0ef2d69da52c413a2e631ca03ada661bdf

Author: barbasa

jenkins/gerrit-bazel-plugin-replication-status.yaml

@@ -6,6 +6,7 @@
       - 'plugin-{name}-gh-bazel-{branch}':
           branch:
             - master
+            - stable-3.13
       - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
           branch:
             - master