Pointing the Openonu go chart to the upstream published version

Change-Id: I924c7dd39d1a843e32aebd64c4b85521cf239558
diff --git a/voltha-stack/Chart.yaml b/voltha-stack/Chart.yaml
index a04b60a..2008b49 100644
--- a/voltha-stack/Chart.yaml
+++ b/voltha-stack/Chart.yaml
@@ -28,7 +28,7 @@
 name: voltha-stack
 
 appVersion: "1.0"
-version: 0.1.6
+version: 0.1.7
 
 dependencies:
   - name: voltha
@@ -36,7 +36,7 @@
     version: 2.8.1
     condition: voltha.enabled
   - name: voltha-adapter-openonu
-    repository: file://../voltha-adapter-openonu
+    repository: https://charts.opencord.org
     version: 2.7.9
     condition: voltha-adapter-openonu.enabled
   - name: voltha-adapter-openolt