docker_container: ambiguous parameter "stop_timeout" (#43874)

* docker_container: Honour stop_timeout when creating docker containers (#43814)

* Adjusting description to what actually happens.

See docker-py changelog for 2.7.0: 'APIClient.stop will
no longer override the stop_timeout value present in the
container’s configuration.'

* Add a test whether stop_timeout can be configured for the container.

* Added changelog.

* Integrate with comparisons (by default, ignore stop_timeout value for restarts; will be configurable with PR ansible/ansible#44789).

* Fix config change code and tests (#2)

* Improving wildcard test.
* Using correct config.

test/integration/targets/docker_container/tasks/tests/comparisons.yml

@@ -381,6 +381,7 @@
     name: "{{ cname }}"
     state: started
     hostname: example.com
+    stop_timeout: 1
     labels:
       ansible.test.1: hello
       ansible.test.2: world
@@ -394,6 +395,7 @@
     name: "{{ cname }}"
     state: started
     hostname: example.org
+    stop_timeout: 2
     labels:
       ansible.test.1: hello
       ansible.test.4: ignore