Add metrics-reporter-prometheus plugin

Change-Id: I33126abce40657621b7586d20b6b886c1f764105
diff --git a/jenkins/gerrit-bazel-plugin-metrics-reporter-prometheus.yaml b/jenkins/gerrit-bazel-plugin-metrics-reporter-prometheus.yaml
new file mode 100644
index 0000000..85256e5
--- /dev/null
+++ b/jenkins/gerrit-bazel-plugin-metrics-reporter-prometheus.yaml
@@ -0,0 +1,7 @@
+- project:
+    name: metrics-reporter-prometheus
+    jobs:
+      - 'plugin-{name}-bazel-{branch}':
+          branch:
+            - master
+            - stable-2.14
\ No newline at end of file