Add support for Grafana

This patch enables support for Grafana and provide a new dashboard.

Change-Id: I125fedfbc83685c090dff779a5d650de2c68ef95
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 1e6a177..283ca7e 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -11,3 +11,5 @@
         enabled: true
       config:
         enabled: true
+      grafana:
+        enabled: true