Disable Sensu support by default

Change-Id: Ifb1ad8c65e9e21b99469f9c7382e48637d7cea86
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index cb2f13a..f8eb577 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -6,7 +6,7 @@
       heka:
         enabled: true
       sensu:
-        enabled: true
+        enabled: false
       sphinx:
         enabled: true
       iptables: