Don't pop 'vpn' on kwargs inside a loop in RPCAllocateFixedIP._allocate_fixed_ips (fixes KeyError).
Don't pop 'vpn' on kwargs inside a loop in RPCAllocateFixedIP._allocate_fixed_ips (fixes KeyError).

Update allocate_fixed_ip methods in network manager to accept correct kwargs. (fixes regression in bzr 1266)
n0ano/ganttclient