Introduce a new helper script, mkimage.sh that creates a debian base
raw image with debootstrap so that it can be used in a virtual
Install network-manager and a hook to update hostname with info
provided by DHCP responce.
Add new conf setting for the size of the image.
Create another empty image as well so that the VM can use it for
Remove unused settings.
Signed-off-by: Dimitris Aragiorgis <email@example.com>