Merge "Import merge_configs and merge_yaml from Kolla Ansible"

ansible/action_plugins/merge_configs.py

ansible/action_plugins/merge_yaml.py

kayobe/plugins/action/merge_configs.py

kayobe/plugins/action/merge_yaml.py

kayobe/tests/unit/plugins/action/test_merge_config.py

kayobe/tests/unit/plugins/action/test_merge_yaml.py

requirements.txt