Provide grains for building the main dashboard

Change-Id: I37ece638778214985a408bace1650d978b70b105
diff --git a/keystone/meta/grafana.yml b/keystone/meta/grafana.yml
index c0bd17f..caad76f 100644
--- a/keystone/meta/grafana.yml
+++ b/keystone/meta/grafana.yml
@@ -2,3 +2,18 @@
   keystone:
     format: json
     template: keystone/files/grafana_dashboards/keystone_influxdb.json
+  main:
+    row:
+      ost-control-plane:
+        title: OpenStack Control Plane
+        panel:
+          keystone:
+            title: Keystone
+            links:
+            - dashboard: Keystone
+              title: Keystone
+              type: dashboard
+            target:
+              cluster_status:
+                rawQuery: true
+                query: SELECT last(value) FROM cluster_status WHERE cluster_name = 'keystone' AND environment_label = '$environment' AND $timeFilter GROUP BY time($interval) fill(null)