docker modules: make sure everything works with older docker-py versions (#55258)

* General test improvements.

* Adjust tests to older docker-py versions.

* docker_swarm_server_info: work around problems with older docker-py versions

* Bump minimal docker-py version for options network_filters and disk_usage.

* More general test improvements.

* Correct usage of docker_image.

* Put files into output directory.

* Speed up test.

* Remove old check.

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

@@ -27,7 +27,6 @@
       image: alpine:3.8
       command: '/bin/sh -c "sleep 10m"'
       state: started
-      auto_remove: yes
       force_kill: yes
 
   - name: Inspect a present container
@@ -45,12 +44,6 @@
   - name: Dump docker inspect result
     debug: var=docker_inspect_result
 
-  - name: Cleanup
-    docker_container:
-      name: "{{ cname }}"
-      state: absent
-      force_kill: yes
-
   - assert:
       that:
       - result.exists
@@ -58,6 +51,13 @@
       - "result.container"
       - "result.container == docker_inspect_result[0]"
 
+  always:
+  - name: Cleanup
+    docker_container:
+      name: "{{ cname }}"
+      state: absent
+      force_kill: yes
+
   when: docker_py_version is version('1.8.0', '>=') and docker_api_version is version('1.20', '>=')
 
 - fail: msg="Too old docker / docker-py version to run docker_container_info tests!"