It would be nice to be able to boot images using kernels contained within the
image using pygrub. This would allow new images using different domU kernels to
be pushed out to remote sites without action being taken by the local
sysadmins.

The use case for us (University of Victoria) is: Physicist would like ship out
new a Scientific Linux image out to SuSe cluster at without making a request to
local sysadmin to make a new kernel available on cluster worker nodes.