Added support for building VMs from a template
Merge branch 'oc243-snapshot' into upstream. This patch lets you create VMs from the DTG-template. The process takes just over a minute.

Still todo:
-Arrange that Dom0 can SSH into the guest, in order to set the hostname and rename puppet
-the VDI name-label of /dev/xvda is currently not updated to show the new VM's name.

Conflicts:
	cl-dtg-make-vm/cl-dtg-make-vm.py
This patch changes the cl-dtg-make-vm script to use copy on write. This reduces the time to make a VM from 90ish seconds to 23. Most of these 23 seconds are the bootup process, where the new VM decides that it has a /dev/xvdb and so it should partition, filesystem, and mount it
New changelog entry for release 0.0.5 where we now build VMs from a tempalte, which is much faster
Merge branch 'upstream'
Merge branch 'packaging'