VOL-3310 Update image tags for release

Change-Id: I8b7da6fbe8332d7689e43457b7db0f0ce504ae1c
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index 4456eaf..e8f2f89 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha"
-version: "2.5.0"
+version: "2.5.1"
 description: "A Helm chart for Voltha based on K8S resources in Voltha project"
 keywords:
   - "onf"