Build quota plugin on stable-2.14

Change-Id: If831179d91c050a6595841b888bf8e04c31dd399
diff --git a/jenkins/gerrit-buck-bazel-plugin-quota.yaml b/jenkins/gerrit-buck-bazel-plugin-quota.yaml
index af104be..d4cc42d 100644
--- a/jenkins/gerrit-buck-bazel-plugin-quota.yaml
+++ b/jenkins/gerrit-buck-bazel-plugin-quota.yaml
@@ -9,3 +9,4 @@
       - 'plugin-{name}-bazel-{branch}':
           branch:
             - master
+            - stable-2.14