Make RAPI CreateInstance() arguments configurable
Make RAPI CreateInstance() arguments deployment-specific.Add the GANETI_CREATEINSTANCE_KWARGS setting, which allows the administratorto set arbitrary arguments to RAPI CreateInstance().
Also add initial version of README.Upgrade, detailing...
Add patches to support simple NAT-based networking
Add patches to NFDHCPD, the sample KVM ifup scriptand the python-nfqueue package to support simple NAT-based networking,under contrib/patches.