fixup! docker: Implement rm and some + fix codestyle + subtest

Signed-off-by: Chris Evich <cevich@redhat.com>
fixup! docker: Add docker_cli start tests.

Signed-off-by: Chris Evich <cevich@redhat.com>
Merge pull request #1 from cevich/jzupka-start3

some fixups for start3  for keeping  compatibility with interface....