VOL-3958 support for ingress in helm charts

Change-Id: I8c53016debb11760dd8ae39e8662ba0489d705a9
diff --git a/voltha-infra/values.yaml b/voltha-infra/values.yaml
index 113e1c4..576507b 100644
--- a/voltha-infra/values.yaml
+++ b/voltha-infra/values.yaml
@@ -50,6 +50,18 @@
 
 etcd:
   enabled: true
+  ingress:
+    enabled: false
+    annotations:
+      kubernetes.io/ingress.class: "nginx"
+      nginx.ingress.kubernetes.io/ssl-redirect: "true"
+      nginx.ingress.kubernetes.io/backend-protocol: "GRPC"
+      nginx.ingress.kubernetes.io/grpc-backend: "true"
+    enableVirtualHosts: false
+    hosts:
+      - host:
+        paths:
+          - "/etcdserverpb.KV/"
   auth:
     rbac:
       enabled: false