Add prometheus support with alerts

Change-Id: I1f4a341ad86c982a2072dd56870efafbc8d7e346
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 95a2e7e..e00f238 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -11,3 +11,5 @@
         enabled: true
       grafana:
         enabled: true
+      prometheus:
+        enabled: true