Fix interface naming in mitaka-ovs-trusty model

Change interface naming from ens* to eth*

Change-Id: I917dca28a0450827293f78901b2e3f3506ef2af8
diff --git a/classes/cluster/virtual-mcp-mitaka-ovs-trusty/stacklight/server.yml b/classes/cluster/virtual-mcp-mitaka-ovs-trusty/stacklight/server.yml
index af9f983..2202580 100644
--- a/classes/cluster/virtual-mcp-mitaka-ovs-trusty/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp-mitaka-ovs-trusty/stacklight/server.yml
@@ -35,7 +35,7 @@
     kibana_elasticsearch_host: ${_param:stacklight_monitor_address}
     keepalived_prometheus_vip_address: ${_param:stacklight_monitor_address}
     keepalived_prometheus_vip_password: 'password'
-    keepalived_prometheus_vip_interface: ens4
+    keepalived_prometheus_vip_interface: eth1
     cluster_vip_address: ${_param:stacklight_monitor_address}
     cluster_local_address: ${_param:single_address}
     cluster_elasticsearch_port: 9200
@@ -65,7 +65,7 @@
   linux:
     network:
       interface:
-        ens4:
+        eth1:
           enabled: true
           type: eth
           proto: static