Parameter normalisation
diff --git a/metadata/service/client/init.yml b/metadata/service/client/init.yml
index 9a1b0f6..cbf9f47 100644
--- a/metadata/service/client/init.yml
+++ b/metadata/service/client/init.yml
@@ -1,5 +1,7 @@
 applications:
 - collectd
+classes:
+- service.collectd.support
 parameters:
   collectd:
     client:
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
new file mode 100644
index 0000000..b51bbb4
--- /dev/null
+++ b/metadata/service/support.yml
@@ -0,0 +1,9 @@
+parameters:
+  collectd:
+    _support:
+      collectd:
+        enabled: true
+      heka:
+        enabled: false
+      sensu:
+        enabled: true