Disable Sensu support by default

Change-Id: I4711aaa954fbbf8f02b2731e6ae62db127ed21be
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 7699edd..031dcfb 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -10,7 +10,7 @@
       heka:
         enabled: true
       sensu:
-        enabled: true
+        enabled: false
       sphinx:
         enabled: true
       grafana: