[WIP] Controllers isolation with GRE tunnels
[WIP] Controllers isolation with GRE tunnels

After new controllers provisioned, run this script to create OVS bridges for
public and management networks and create tunnels between controllers to ensure
that they can communicate isolated from nodes in original environment.

Mirantis/octane,stackforge/fuel-octane,Mirantis/octane,stackforge/fuel-octane