Merge "Use merge_configs and merge_yaml to generate Kolla configs"

ansible/kolla-ansible.yml

ansible/kolla-bifrost.yml

ansible/kolla-build.yml

ansible/roles/kolla-ansible/defaults/main.yml

ansible/roles/kolla-ansible/tasks/config.yml

ansible/roles/kolla-ansible/templates/kolla/globals.yml

ansible/roles/kolla-ansible/tests/main.yml

ansible/roles/kolla-ansible/tests/test-defaults.yml

ansible/roles/kolla-ansible/tests/test-extras.yml

ansible/roles/kolla-ansible/tests/test-globals-merge.yml

ansible/roles/kolla-ansible/tests/test-requirements.yml

ansible/roles/kolla-bifrost/defaults/main.yml

ansible/roles/kolla-bifrost/tasks/main.yml

.../kolla-bifrost/templates/kolla/config/bifrost/bifrost.yml

...oles/kolla-bifrost/templates/kolla/config/bifrost/dib.yml

.../kolla-bifrost/templates/kolla/config/bifrost/servers.yml

ansible/roles/kolla-build/defaults/main.yml

ansible/roles/kolla-build/tasks/main.yml

ansible/roles/kolla-build/templates/kolla/kolla-build.conf

doc/source/multiple-environments.rst