VOL-3958 support for ingress in helm charts

Change-Id: I8c53016debb11760dd8ae39e8662ba0489d705a9
diff --git a/voltha-stack/values.yaml b/voltha-stack/values.yaml
index 0574d6c..dea3bad 100644
--- a/voltha-stack/values.yaml
+++ b/voltha-stack/values.yaml
@@ -25,6 +25,9 @@
 
 voltha:
   enabled: true
+  ingress:
+    enabled: false
+    enableVirtualHosts: false
   rw_core:
     kv_store_data_prefix: 'service/voltha/{{ .Release.Name }}_{{ .Values.global.stack_name }}'
     topics: