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/openstack/compute.yml b/classes/cluster/virtual-mcp-mitaka-ovs-trusty/openstack/compute.yml
index 761bea8..7646ca0 100644
--- a/classes/cluster/virtual-mcp-mitaka-ovs-trusty/openstack/compute.yml
+++ b/classes/cluster/virtual-mcp-mitaka-ovs-trusty/openstack/compute.yml
@@ -10,9 +10,9 @@
 - cluster.virtual-mcp-mitaka-ovs-trusty
 parameters:
   _param:
-    primary_interface: ens4
-    tenant_interface: ens5
-    external_interface: ens6
+    primary_interface: eth1
+    tenant_interface: eth2
+    external_interface: eth3
     interface_mtu: 1500
   nova:
     compute:
@@ -33,7 +33,7 @@
       interface:
         dhcp_int:
           enabled: true
-          name: ens3
+          name: eth0
           proto: dhcp
           type: eth
           mtu: ${_param:interface_mtu}