Build verify-status plugin on stable-3.4 branch

Change-Id: Ie2e508182904bc3aeaa90d05050be0cb2267d6c5
diff --git a/jenkins/gerrit-bazel-plugin-verify-status.yaml b/jenkins/gerrit-bazel-plugin-verify-status.yaml
index 911b167..9211361 100644
--- a/jenkins/gerrit-bazel-plugin-verify-status.yaml
+++ b/jenkins/gerrit-bazel-plugin-verify-status.yaml
@@ -10,4 +10,5 @@
             - master
           gerrit-branch:
             - master
+            - stable-3.4
             - stable-3.3