Add support for Grafana

This patch adds support for Grafana and provides a new dashboard.

Change-Id: I6060626cd814164121df2f23bed92aed789e30e6
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index fb94e22..6be4290 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -10,4 +10,6 @@
       sphinx:
         enabled: true
       config:
-        enabled: true
\ No newline at end of file
+        enabled: true
+      grafana:
+        enabled: true