Disable Sensu support by default

Change-Id: Iec8d5d5104a7164906c6e3a5b8872b11d60df4e6
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 6a99f0f..3d7dee6 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: