Add job generating homepage

The job is triggered
- by polling the homepage repository for changes on the master branch
  every 10 minutes
- every midnight to ensure the plugins page is updated in case
  information about existing plugins changed

Change-Id: I9e26d7cbb2da6e9ef732bad33365a132ce2b396c
diff --git a/jenkins/homepage.yaml b/jenkins/homepage.yaml
new file mode 100644
index 0000000..4fb82d6
--- /dev/null
+++ b/jenkins/homepage.yaml
@@ -0,0 +1,13 @@
+- job:
+    name: homepage
+    project-type: pipeline
+    pipeline-scm:
+      scm:
+        - git:
+            url: https://gerrit.googlesource.com/homepage
+            branches:
+              - master
+    triggers:
+      - pollscm:
+          cron: "H/10 * * * *"
+      - timed: "@midnight"