Add Prometheus alarms

Change-Id: I4c69730cde5db1f7514d9cbdc3cf7bdb62756267
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 9876a1e..8cbd08c 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -13,3 +13,5 @@
         enabled: true
       grafana:
         enabled: true
+      prometheus:
+        enabled: true