Removing the openonu-py from the helm charts, increasing the of-agent version

Change-Id: Ia99c813d4e34b32e4a3325442cc6f0b9aa75ced1
diff --git a/voltha-adapter-openonu/Chart.yaml b/voltha-adapter-openonu/Chart.yaml
index 12b5418..440e0a1 100644
--- a/voltha-adapter-openonu/Chart.yaml
+++ b/voltha-adapter-openonu/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha-adapter-openonu"
-version: "2.7.12"
+version: "2.7.13"
 description: "A Helm chart for Voltha OpenONU Adapter"
 keywords:
   - "onf"