Merge pull request #28 from SwannCroiset/alerting-property

Redefine alerting property
diff --git a/linux/meta/heka.yml b/linux/meta/heka.yml
index f88c051..0c4a43c 100644
--- a/linux/meta/heka.yml
+++ b/linux/meta/heka.yml
@@ -56,8 +56,7 @@
         function: avg
   alarm:
     linux_system_cpu:
-      notifications: False
-      alerting: True
+      alerting: enabled
       triggers:
       - linux_system_cpu_warning
       - linux_system_cpu_critical