Create a new minimal 'debianbase' definition which is a veewee template
that's a lot like the systemvmtemplate, but does not have any
systemvm-ness in it. Use it to create a new test.sh which tests a few
common invocations of build.sh work as desired.
This is mainly useful for debugging whether the appliance build process
is working / consistent; in order to test a systemvm itself it should
really first be merged with systemvm.iso.
Leo Simons