VOL-3310 Update image tags for release

Change-Id: I8b7da6fbe8332d7689e43457b7db0f0ce504ae1c
diff --git a/voltha-adapter-openolt/Chart.yaml b/voltha-adapter-openolt/Chart.yaml
index eb4a9c3..5f89854 100644
--- a/voltha-adapter-openolt/Chart.yaml
+++ b/voltha-adapter-openolt/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha-adapter-openolt"
-version: "2.5.0"
+version: "2.5.1"
 description: "A Helm chart for Voltha OpenOLT Adapter"
 keywords:
   - "onf"
@@ -31,6 +31,5 @@
     email: "info@opennetworking.org"
     url: "https://www.opennetworking.org"
 
-# appVersion refers to multiple components with potentially different
-# container image versions.
-appVersion: "2.4"
+# appVersion selects the image tag to run
+appVersion: "2.4.9"