Add models with mitaka/newton os releases for maintenance purposes

Change-Id: I555bf37aba6c48be4d3513bb8f413fb809b6b25c
diff --git a/classes/cluster/virtual-mcp-newton-ovs/openstack/gateway.yml b/classes/cluster/virtual-mcp-newton-ovs/openstack/gateway.yml
new file mode 100644
index 0000000..a54d889
--- /dev/null
+++ b/classes/cluster/virtual-mcp-newton-ovs/openstack/gateway.yml
@@ -0,0 +1,81 @@
+classes:
+- system.linux.system.repo.mcp.openstack
+- system.linux.system.repo.mcp.extra
+- system.linux.system.repo.saltstack.xenial
+- system.neutron.gateway.cluster
+- cluster.virtual-mcp-newton-ovs
+parameters:
+  _param:
+    primary_interface: ens4
+    tenant_interface: ens5
+    external_interface: ens6
+    interface_mtu: 9000
+    linux_system_codename: xenial
+  linux:
+    network:
+      bridge: openvswitch
+      interface:
+        dhcp_int:
+          enabled: true
+          name: ens3
+          proto: dhcp
+          type: eth
+          mtu: ${_param:interface_mtu}
+        primary_interface:
+          enabled: true
+          ipflush_onchange: true
+          name: ${_param:primary_interface}
+          mtu: ${_param:interface_mtu}
+          proto: manual
+          type: eth
+        tenant_interface:
+          enabled: true
+          ipflush_onchange: true
+          name: ${_param:tenant_interface}
+          mtu: ${_param:interface_mtu}
+          proto: manual
+          type: eth
+        external_interface:
+          enabled: true
+          ipflush_onchange: true
+          name: ${_param:external_interface}
+          mtu: ${_param:interface_mtu}
+          proto: manual
+          type: eth
+        br-floating:
+          enabled: true
+          type: ovs_bridge
+          mtu: ${_param:interface_mtu}
+        br-mgmt:
+          enabled: true
+          type: bridge
+          proto: static
+          address: ${_param:single_address}
+          netmask: 255.255.255.0
+          mtu: ${_param:interface_mtu}
+          use_interfaces:
+          - ${_param:primary_interface}
+        br-mesh:
+          enabled: true
+          type: bridge
+          mtu: ${_param:interface_mtu}
+          proto: static
+          address: ${_param:tenant_address}
+          netmask: 255.255.255.0
+          use_interfaces:
+          - ${_param:tenant_interface}
+        float-to-ex:
+          enabled: true
+          type: ovs_port
+          mtu: ${_param:interface_mtu}
+          bridge: br-floating
+        br-ex:
+          enabled: true
+          type: bridge
+          mtu: ${_param:interface_mtu}
+          address: ${_param:external_address}
+          netmask: 255.255.255.0
+          use_interfaces:
+          - ${_param:external_interface}
+          use_ovs_ports:
+          - float-to-ex