Add build for GerritForge/plugins_zookeper plugin

GerritForge/plugins_zookeer plugin is a global ref-db implementation
based on zookeeper. This plugin is hosted on github.

Change-Id: I294e742ee552d115085c4774ccd12b998d244443
diff --git a/jenkins/gerrit-bazel-plugin-zookeeper.yaml b/jenkins/gerrit-bazel-plugin-zookeeper.yaml
new file mode 100644
index 0000000..910f0de
--- /dev/null
+++ b/jenkins/gerrit-bazel-plugin-zookeeper.yaml
@@ -0,0 +1,8 @@
+- project:
+    name: zookeeper
+    organization: GerritForge
+    repo: plugins_zookeeper
+    jobs:
+      - 'plugin-{name}-gh-bazel-{branch}':
+          branch:
+            - stable-3.0