[product: zaphod][project: zaphod-v0.3]: Partial implemented _login_parameters.

SYNOPSIS
[modified]m42/zaphod.py: Implementation _login_parameters for VMs using NAT.
[modified]m42/test/test_zaphod.py: Test _login_parameters.

DETAILS
_login_parameters returns the parameters needed to login to a virtual
machine. This has been implemented for NATed VMs but not VMs using
bridged networking.
Merge branch 'master' of git:zaphod