Disable Sensu support by default

Change-Id: I72a063e4c162d245fe7ce9bae0f5d62f40a1f15a
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 903e306..52c321a 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: