Client Server Version mismatches

[dustymabe]

Occasionally we have seen issues where we can get client/server version mismatches. In newer versions of docker a DOCKER_API_VERSION environment variable is respected. https://github.com/docker/docker/pull/15964

I know we are moving away from using the docker cli client and using shipy/docker-py instead. In that case there is an "Autoversion" function we can use. we should use that if we aren't already. here is an example where the ansible guys used it: ansible/ansible-container@80a7a50#diff-e208f3f3c221c512d250c28a93d212c8R590

We should make sure we're doing this if we aren't already to make sure we don't have issues of "mismatched versions" in the future.