tree c193922c29a0b60db4e852637d328a0273c7b2bb
parent d0533e5f528e0bffa674d38e973418a693dc86f9
author samuel <jiangchuncheng@huawei.com> 1437450682 +0800
committer samuel <jiangchuncheng@huawei.com> 1438136026 +0800

[ONOS-2115]Create an application named vtn to apply configuration and
flows to ovsdb device.
1. Creates/drops vxlan tunnels and a ovs when a ovs controller node is
detected
2. Applies default forwarding flows when a ovs is detected
3. Applies tunnel flows and multicast flows when a VM is detected

Change-Id: I66d719eaaef364b197952c7b9d7f72c4b269c926