Merge "Implement external MariaDB and pre-configured Databases support"

ansible/group_vars/all.yml

ansible/roles/aodh/defaults/main.yml

ansible/roles/aodh/tasks/bootstrap.yml

ansible/roles/aodh/templates/aodh.conf.j2

ansible/roles/barbican/defaults/main.yml

ansible/roles/barbican/tasks/bootstrap.yml

ansible/roles/cinder/defaults/main.yml

ansible/roles/cinder/tasks/bootstrap.yml

ansible/roles/cloudkitty/defaults/main.yml

ansible/roles/cloudkitty/tasks/bootstrap.yml

ansible/roles/congress/defaults/main.yml

ansible/roles/congress/tasks/bootstrap.yml

ansible/roles/designate/defaults/main.yml

ansible/roles/designate/tasks/bootstrap.yml

ansible/roles/freezer/defaults/main.yml

ansible/roles/glance/defaults/main.yml

ansible/roles/glance/tasks/bootstrap.yml

ansible/roles/gnocchi/defaults/main.yml

ansible/roles/gnocchi/tasks/bootstrap.yml

ansible/roles/gnocchi/templates/gnocchi.conf.j2