Set docker bridge ip to avoid devcloud net overlap

Change-Id: I75be882df858fb87d54c568bd53d31c4b7615623
diff --git a/classes/cluster/k8s_ha_contrail/kubernetes/compute.yml b/classes/cluster/k8s_ha_contrail/kubernetes/compute.yml
index 8a4855b..1424aec 100644
--- a/classes/cluster/k8s_ha_contrail/kubernetes/compute.yml
+++ b/classes/cluster/k8s_ha_contrail/kubernetes/compute.yml
@@ -30,6 +30,8 @@
       pkgs:
         - docker-engine=1.12.6-0~ubuntu-xenial
         - python-docker
+      options:
+        bip: 172.31.255.1/24
   kubernetes:
     pool:
       network: