fix dockertest.images regex not include permitted chars

Both hostnames, images names, and tag names may all contain
additional characters which are not present in the '\w' class.

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