docker_cli/create: Test docker 'create' command

Signed-off-by: Chris Evich <cevich@redhat.com>
docs: Fix attribute error in older python 2.7

Signed-off-by: Chris Evich <cevich@redhat.com>
images: Use guaranteed list interface

Signed-off-by: Chris Evich <cevich@redhat.com>