docker_* modules: unify docker module version checks (#47046)

* Unify docker module version checks.

* Improve messages depending on required docker-py versions.

* Linting.

lib/ansible/modules/cloud/docker/docker_network.py

@@ -163,7 +163,7 @@ try:
     from docker import utils
     if HAS_DOCKER_PY_2 or HAS_DOCKER_PY_3:
         from docker.types import IPAMPool, IPAMConfig
-except:
+except Exception as dummy:
     # missing docker-py handled in ansible.module_utils.docker_common
     pass
 
@@ -384,6 +384,7 @@ def main():
     client = AnsibleDockerClient(
         argument_spec=argument_spec,
         supports_check_mode=True
+        # "The docker server >= 1.9.0"
     )
 
     cm = DockerNetworkManager(client)