Disable Sensu support by default

Change-Id: I4787b1a6c6805aaf1239150c8612e2012dd6c026
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 6a97241..8bcddf3 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -6,6 +6,6 @@
       heka:
         enabled: false
       sensu:
-        enabled: true
+        enabled: false
       sphinx:
         enabled: true