Java11 build: check for SCM updates every 10 mins

Query SCM for any new commit every 10 minutes and build
automatically.

Change-Id: I04096d8d5fa9b075327e293e8f77f3b6633a7958
diff --git a/jenkins/gerrit-bazel-template.yaml b/jenkins/gerrit-bazel-template.yaml
index 0400c37..413f8b4 100644
--- a/jenkins/gerrit-bazel-template.yaml
+++ b/jenkins/gerrit-bazel-template.yaml
@@ -97,6 +97,9 @@
     name: 'Gerrit-bazel-java11-{branch}'
     description: "{name} {branch} branch build with Bazel and Java 11\n"
     defaults: gerrit-bazel-defaults
+    triggers:
+      - pollscm:
+          cron: 'H/10 * * * *'
     properties:
        - build-discarder:
            days-to-keep: 20