add prometheus endoint flag to roc

Change-Id: Iad60d4019292fc6eee26ecdf2abc81b2f80c2828
diff --git a/aether-roc-api/values.yaml b/aether-roc-api/values.yaml
index 93cbfcd..d05fe06 100644
--- a/aether-roc-api/values.yaml
+++ b/aether-roc-api/values.yaml
@@ -19,6 +19,7 @@
 fullnameOverride: "aether-roc-api"
 
 gnmiEndpoint: onos-config:5150
+analyticsEndpoint: http://aether-roc-umbrella-prometheus-acc-server:9090
 gnmiTimeout: 10s
 port: 8181