Releasing new charts with updated openonu-go adapter with several fixes

Change-Id: I433ffdd0859598d580c90524215ffd45f56765a8
diff --git a/voltha-stack/Chart.yaml b/voltha-stack/Chart.yaml
index 9205f9f..0729d5a 100644
--- a/voltha-stack/Chart.yaml
+++ b/voltha-stack/Chart.yaml
@@ -28,7 +28,7 @@
 name: voltha-stack
 
 appVersion: "2.8"
-version: 2.8.1
+version: 2.8.2
 
 dependencies:
   - name: voltha
@@ -37,7 +37,7 @@
     condition: voltha.enabled
   - name: voltha-adapter-openonu
     repository: file://../voltha-adapter-openonu
-    version: 2.8.6
+    version: 2.8.7
     condition: voltha-adapter-openonu.enabled
   - name: voltha-adapter-openolt
     repository: file://../voltha-adapter-openolt