Updated armband

Updated armband
Project: fuel  7c600840185d9b454c1995e35a9704db823fb5c6

virtual_fuel: prepare class to allow multiple bridges

The VirtualFuel class has now two new methods:

    del_vm_nics: Deletes all interfaces from the VM.

    add_vm_nic: Adds a NIC to the VM, attached to the specified bridge.

The following method has been deleted:

    set_vm_nic: implemented with the two new methods

Apart from the deleted method, no functionality has been changed.

This is just a small but necessary step towards adding support for
configuring more than one NIC in the fuel VM.

Change-Id: I9f02c8163dfb9768510e78d5d5e77a0bb43306fb
Signed-off-by: Josep Puigdemont <josep.puigdemont@enea.com>
deploy: add support for multiple bridges

deploy.py:
Some Fuel VMs may need more than one network interface. To be able to
provide that, we now allow the user to specify the "-b" paramter
(bridge) multiple times, creating a new NIC for each one of them.

The NICs are created in the same order as they are given in the command
line.

There is no change in behavior from earlier versions, pxebr will still
be the default bridge if none is specified in the command line.

deploy.sh:
To reflect the new capabilities of deploy.py, we introduce the
possibility to specify -B more than once in deploy.sh, and honor that
when calling deploy.py. We also make it possible to specify a comma
separated list of bridges, as in: -B br1,br2.

Change-Id: I1a0100f2cfe755ec6adfeedafb391c2357f46f51
Signed-off-by: Josep Puigdemont <josep.puigdemont@enea.com>