Add plugin menuextender to bazel build

Change-Id: Ic2ff9d4f356ecfdeabc4243e77029bf2f8f26bac
diff --git a/jenkins/gerrit-buck-bazel-plugin-menuextender.yaml b/jenkins/gerrit-buck-bazel-plugin-menuextender.yaml
new file mode 100644
index 0000000..08175fc
--- /dev/null
+++ b/jenkins/gerrit-buck-bazel-plugin-menuextender.yaml
@@ -0,0 +1,9 @@
+- project:
+    name: menuextender
+    jobs:
+      - 'plugin-{name}-{branch}':
+          branch:
+            - stable-2.13
+      - 'plugin-{name}-bazel-{branch}':
+          branch:
+            - master