Removal of docker content for 2.0.0 (#1304)

* Remove docker content.

* Clean up BOTMETA.

* Add redirects, tombstone docker_image_facts and docker_service.

* Add changelog.

* Remove docker action group.

* Rewrite fragment.

* Ansible 2.11 is now called Ansible 3.0.0.

tests/integration/targets/setup_docker/defaults/main.yml

@@ -1,16 +0,0 @@
-docker_cli_version: '0.0'
-docker_api_version: '0.0'
-docker_py_version: '0.0'
-docker_skip_cleanup: no
-docker_prereq_packages: []
-docker_packages:
-  - docker-ce
-
-docker_pip_extra_packages: []
-docker_pip_package: docker
-docker_pip_package_limit: ''
-
-docker_cleanup_packages:
-  - docker
-  - docker-ce
-  - docker-ce-cli