[xen-tools-discuss] Python script for hooks/roles

[Damien Churchill]

I've ported the /usr/lib/xen-tools/common.sh script over to python to ease
creating role scripts.
Just wondered if anyone was interested in it.

The chmod helper function I know is extremely poor, just wanted to throw
something together quickly instead of having to call chmod (I figure where
possible avoid having to load a whole program into the memory)