Bumping VERSION after VOLTHA-2.9 release

Change-Id: I8978c46b1616f34864f9bef98636b99d257382c4
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index 6c6dc54..dd6aa49 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha"
-version: "2.10.9"
+version: "2.11.0-dev"
 description: "A Helm chart for Voltha based on K8S resources in Voltha project"
 keywords:
   - "onf"