Allow running on local dev docker images

Allow running on local dev docker images

Docker makes it difficult to use images that are not on signed
registries.  This is a problem for developers, who likely won't have
access to a registry with proper signed certificates.

This allows the ability to use any docker image on the machine running
vagrant/ansible.  The way it works is that the image in question is
exported locally, then sent to each target box and imported there.

Signed-off-by: Daniel Gryniewicz <dang@redhat.com>