* Add more tests.
* Added tests for CA options.
* Don't run in docker-in-docker situations where docker daemon becoming instable is really dangerous. Also, restart docker daemon after tests.
* Only run CA tests when openssl_certificate can be run (which is not the case for RHEL7, see #34054).
* Add comment on why docker-based CI runs are skipped.
* Add diff support to docker_swarm.
* Add changelog.
* Using diff mode for docker_swarm tests. This improves debugging, since the the module now outputs more information on *why* it did certain actions.
Incorporating the abandoned work from PRs #35288 and #45552. Also adding in
the version checking from `docker_container.py`, which should be abstracted
out to `docker_common.py`.
* Check minimal API and docker-py versions for all docker_* tests.
* Improve docker_swarm creation/destruction for tests.
* Fail when conditions aren't met.
* Don't hardcode address for advertise_addr.
* Update Shippable integration test groups.
* Update integration test group aliases.
* Rebalance AWS and Azure tests with extra group.
* Rebalance Windows tests with another group.
