bud.bats refactoring: $TEST_SCRATCH_DIR, part 2 of 2
bud.bats refactoring: $TEST_SCRATCH_DIR, part 2 of 2

Manual cleanup, basically a lot of eyeballing:

 - search for 'cp -R', look for instances that the script
   goofed on, clean those up

 - grep TEST_SCRATCH_DIR tests/bud.bats|grep -v contextdir|less
   and look for whatever looks wrong. This mostly found cases
   of "use-layers" where there were multiple mkdirs.

Signed-off-by: Ed Santiago <792d28329de7ed446c01b83f731a071248ffeaf4@redhat.com>

TomSweeneyRedHat/buildah,nalind/buildah-1,nalind/buildah-1,TomSweeneyRedHat/buildah,nalind/buildah-1,TomSweeneyRedHat/buildah