Adding support for selecting private/public ip option in azure brownfield data

[abhijeetkaurav1st]

Right now if we do BF.Vm.Azure(instance_name="vm-7b1b8-0")

It will select public-ip-address only and send to server. Add an option to select private ip also. Something on this way: BF.Vm.Azure(instance_name="vm-7b1b8-0", use_private_address=True)