- include_tasks: test_swarm.yml
  when: docker_py_version is version('2.6.0', '>=') and docker_api_version is version('1.25', '>=')

- fail: msg="Too old docker / docker-py version to run docker_swarm tests!"
  when: not(docker_py_version is version('2.6.0', '>=') and docker_api_version is version('1.25', '>=')) and (ansible_distribution != 'CentOS' or ansible_distribution_major_version|int > 6)