Since some unit tests use "busybox", we need to point it to some alias
if we want it to pass CI on F34 where we're running in enforced mode.
Furthermore, make sure that the registries.conf can actually be
overridden in the code.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Again, that makes the core logic independent from Runtime == containers-storage,
and easier to test independently.
So, this also adds tests.
Should not change behavior.
Signed-off-by: Miloslav Trmač <mitr@redhat.com>
Closes: #1176
Approved by: rhatdan
