Merge "Performance: avoid set_fact in Kolla Ansible host vars"

ansible/action_plugins/kolla_ansible_host_vars.py

ansible/kolla-ansible.yml

kayobe/plugins/__init__.py

kayobe/plugins/action/__init__.py

kayobe/plugins/action/kolla_ansible_host_vars.py

kayobe/tests/unit/plugins/__init__.py

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

...tests/unit/plugins/action/test_kolla_ansible_host_vars.py