neutron: start services after rabbitmq resources
neutron: start services after rabbitmq resources

To make sure Neutron can connect to RabbitMQ the first time, manage the
RabbitMQ resources before starting Neutron.

It will avoid some errors when agents try to start and reach RabbitMQ
not ready yet.

Change-Id: Ic675b92be22002f11e17ee328c4dddcf4d7ee831

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration