add ip per pod across vms

Vagrant+salt setup for providing a openvswitch based network for minions.
Pods will get an IP address that can be reached from across nodes/pods.
There is a bug in the salt stuff (not introduced by this code) that is attempting to invoke nsinit state on each minion (which is doing a apt-get) which is not working on Fedora obviously, will follow-that up on another PR that this should rebase against.