Updated openstack/openstack
Project: openstack/nova  2344e63e0c96b4f8451d6eec0a39a87b176e36df
null
Update network.manager to use VirtualInterface

Update nova.network.manager to use the VirtualInterface object.  This
also includes the ncessary fixes to tests so that they still pass.

Part of blueprint nova-network-objects

Change-Id: I571ab14d8457a4398c3a4260cf3a8b911cff31a6