Update the voltha code to make use of the interface option and add
a new voltha swarm file.

Change-Id: Icf2bd5a35aea3a8aa55de58acb56bfa6f4b34e0d
diff --git a/compose/docker-compose-vcli.yml b/compose/docker-compose-vcli.yml
index f3aafa3..3e543a5 100644
--- a/compose/docker-compose-vcli.yml
+++ b/compose/docker-compose-vcli.yml
@@ -20,6 +20,7 @@
       - -C consul:8500
       - -g voltha:50555
       - -s voltha:18880
+      - -G
     networks:
       - voltha-net
     ports: