Disable Sensu support by default

Change-Id: I4711aaa954fbbf8f02b2731e6ae62db127ed21be

metadata/service/support.yml

@@ -10,7 +10,7 @@ parameters:
       heka:
         enabled: true
       sensu:
-        enabled: true
+        enabled: false
       sphinx:
         enabled: true
       grafana: