Add StackLight monitoring

This commit enables support for heka, collectd and grafana.

Depends-On: Ie6859fade90db3fe528ae8078c79c8be4c3ebcd7

Change-Id: Ic1c7373e6a7985873671d366dac132ac923f3431
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index a77821b..7cf7003 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -2,9 +2,11 @@
   docker:
     _support:
       collectd:
-        enabled: false
+        enabled: true
       heka:
-        enabled: false
+        enabled: true
+      grafana:
+        enabled: true
       sensu:
         enabled: false
       sphinx: