Merge pull request #2215 from a-crate/cit-alerting

Set up CIT alerting

prow/prowjobs/GoogleCloudPlatform/gcp-guest/gcp-guest-config.yaml

@@ -516,6 +516,9 @@ periodics:
   annotations:
     testgrid-dashboards: googleoss-gcp-guest
     testgrid-tab-name: cit-periodics
+    testgrid-broken-column-threshold: '0.012' # Allow 1.2% of tests to be failing and still mark column as passing
+    testgrid-bug-component: '117405'
+    testgrid-num-failures-to-alert: '3'
   interval: 6h
   spec:
     containers:
@@ -571,7 +574,10 @@ periodics:
   annotations:
     testgrid-dashboards: googleoss-gcp-guest
     testgrid-tab-name: oslogin-periodics
-  interval: 24h
+    testgrid-broken-column-threshold: '0.01'
+    testgrid-num-failures-to-alert: '2'
+    testgrid-bug-component: '117405'
+  interval: 12h
   spec:
     containers:
       - image: gcr.io/compute-image-tools/cloud-image-tests:latest