ovs_quantum xifi bridgemappings

## ON ALL DEVICES with this.
## assumes, that second network is accessible via br-ex-2

/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini
...
# Default: bridge_mappings =
# Example: bridge_mappings = physnet1:br-eth1
integration_bridge=br-int
tunnel_id_ranges=2:65535
network_vlan_ranges=physnet1,physnet2,physnet3
enable_tunneling=true
bridge_mappings=physnet1:br-ex,physnet2:br-prv,physnet3:br-ex-2
tunnel_bridge=br-tun
tenant_network_type=gre
local_ip=192.168.0.5