Comment 5 for bug 723235

Right now, we read the xml during instantiation of the libvirt driver. Just move that call into the spawn() method, and you should be fine. It's a pointless optimisation anyway.

It's a local file. If it made a difference to cache a local, small file in memory rather than reading it every time we need it (which is only whenever we need to boot a new VM), we'd be in serious trouble.