The test pulls a big disk image every time which is slow. I see no good
way around that. Let's try to use /dev/null as image as we do not have
to run the VM at all and just can pass a NOP file to make the init
command happy.
That pull of that image seems to take over 2m so we safe quite a lot.
Also update the matcher for the slice. BeTrue() produces horrible
errors.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>