docker_container: simplify minimal required version per option handling (#47711)

* Store parsed docker-py / docker API versions in client.

* Began refactoring 'minimal required version' for docker_container options.

* Removing some fake defaults.

* Added changelog.

* Improve tests (check older docker versions).

* Fix comparison. The breaking point is not docker-py 2.0.0, but 1.10.0.

(Verified by testing with these versions.)

* Move docker-py/API version detection to setup_docker.

* Add YAML document starter.

* docker_network requirement for docker-py was bumped to 1.10.0 in #47492.

test/integration/targets/docker_config/tasks/main.yml

@@ -1,7 +1,3 @@
-- name: Check Docker API version
-  command: "{{ ansible_python.executable }} -c 'import docker; print(docker.from_env().version()[\"ApiVersion\"])'"
-  register: docker_api_version
-  ignore_errors: yes
-
+---
 - include_tasks: test_docker_config.yml
-  when: docker_api_version.rc == 0 and docker_api_version.stdout is version('1.30', '>=')
+  when: docker_api_version is version('1.30', '>=')

test/integration/targets/docker_config/tasks/test_docker_config.yml

@@ -1,3 +1,4 @@
+---
 - name: Make sure we're not already using Docker swarm
   docker_swarm:
     state: absent