Build the batch plugin for Gerrit 2.15

Build the batch plugin's master branch against Gerrit stable-2.15

Change-Id: I151808687a31b69058d97a90e2fa6f0587945e54
diff --git a/jenkins/gerrit-bazel-plugin-batch.yaml b/jenkins/gerrit-bazel-plugin-batch.yaml
new file mode 100644
index 0000000..4b81a99
--- /dev/null
+++ b/jenkins/gerrit-bazel-plugin-batch.yaml
@@ -0,0 +1,8 @@
+- project:
+    name: batch
+    jobs:
+      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
+          branch:
+            - master
+          gerrit-branch:
+            - stable-2.15