VOL-3657 support stack id in rpc events by passing stack id through helm chart

Change-Id: Id45c5984540265eb40df77de979f732080908656
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index 7a7e54f..c293685 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha"
-version: "2.9.0"
+version: "2.9.1"
 description: "A Helm chart for Voltha based on K8S resources in Voltha project"
 keywords:
   - "onf"
@@ -33,4 +33,4 @@
 
 # app version applies to multiple components with potentially different
 # container image versions
-appVersion: "2.7-dev"
+appVersion: "2.8-dev"