Build rabbitmq plugin with bazel on stable-2.14

Change-Id: Id9e3fe7f842328c64c084e464db759b6bc611b70
diff --git a/jenkins/gerrit-buck-bazel-plugin-rabbitmq.yaml b/jenkins/gerrit-buck-bazel-plugin-rabbitmq.yaml
index 866038f..9bc203c 100644
--- a/jenkins/gerrit-buck-bazel-plugin-rabbitmq.yaml
+++ b/jenkins/gerrit-buck-bazel-plugin-rabbitmq.yaml
@@ -10,3 +10,4 @@
       - 'plugin-{name}-bazel-{branch}':
           branch:
             - master
+            - stable-2.14