Merge "Support stop specific containers"

ansible/group_vars/all.yml

ansible/roles/barbican/tasks/stop.yml

ansible/roles/bifrost/tasks/stop.yml

ansible/roles/blazar/tasks/stop.yml

ansible/roles/ceilometer/tasks/stop.yml

ansible/roles/ceph/tasks/stop.yml

ansible/roles/chrony/tasks/stop.yml

ansible/roles/cinder/tasks/stop.yml

ansible/roles/cloudkitty/tasks/stop.yml

ansible/roles/collectd/tasks/stop.yml

ansible/roles/common/tasks/stop.yml

ansible/roles/congress/tasks/stop.yml

ansible/roles/designate/tasks/stop.yml

ansible/roles/elasticsearch/tasks/stop.yml

ansible/roles/etcd/tasks/stop.yml

ansible/roles/freezer/tasks/stop.yml

ansible/roles/glance/tasks/stop.yml

ansible/roles/gnocchi/tasks/stop.yml

ansible/roles/grafana/tasks/stop.yml

ansible/roles/haproxy/tasks/stop.yml