Add local check for Grafana in Sensu

Change-Id: I4284ab5c06cf441be554f58ca95f3c507d2f5f60
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 05bf4b8..3bd2dd1 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -6,7 +6,7 @@
       heka:
         enabled: false
       sensu:
-        enabled: false
+        enabled: true
       sphinx:
         enabled: true
       grafana: