* Move docker_ module_utils into subpackage.
* Remove docker_ prefix from module_utils.docker modules.
* Adding jurisdiction for module_utils/docker to $team_docker.
* Making docker* unit tests community supported.
* Linting.
* Python < 2.6 is not supported.
* Refactoring docker-py version comments. Moving them to doc fragments. Cleaning up some indentations.
* * docker_host_facts: Getting docker host info
* * docker_host_facts: Getting lists of containers, volumes, images and networks as in respective CLI commands
* * docker_host_facts: Adding filters, documentation update
* docker_host_facts: Code cleanup
* docker_host_facts: Adding verbose output option. Documentation update.
* docker_host_facts: Improving author information for ansibot
* docker_host_facts: documentation and small code updates, for `docker_disk_usage` returned type is always dict now
