Merge pull request #21 from simonpasquier/fix-cluster-policy

Fix cluster policy
diff --git a/nginx/meta/heka.yml b/nginx/meta/heka.yml
index d3c4f63..e2f0fc6 100644
--- a/nginx/meta/heka.yml
+++ b/nginx/meta/heka.yml
@@ -21,8 +21,8 @@
         service: nginx
 aggregator:
   alarm_cluster:
-    nginx_check:
-      policy: majority_of_members
+    nginx:
+      policy: availability_of_members
       alerting: enabled_with_notification
       match:
         service: nginx