Comment 10 for bug 1805322

This test worked as expected:
"""
juju deploy --series xenial neutron-api --config openstack-origin=distro
juju deploy --series xenial keystone --config openstack-origin=distro
juju deploy --series xenial percona-cluster --config source=distro
juju deploy --series xenial rabbitmq-server --config source=distro
juju status
juju add-relation keystone percona-cluster
juju add-relation neutron-api percona-cluster
juju add-relation neutron-api keystone
juju add-relation neutron-api rabbitmq-server
juju config neutron-api action-managed-upgrade=true
juju config neutron-api openstack-origin="cloud:xenial-pike"
juju run-action --wait neutron-api/leader openstack-upgrade
juju config neutron-api openstack-origin="cloud:xenial-queens"
juju run-action --wait neutron-api/leader openstack-upgrade
"""