Description of AMQP configuration options

Configuration option = Default value	Description
[DEFAULT]
control_exchange = neutron	(StrOpt) The default exchange under which topics are scoped. May be overridden by an exchange name specified in the transport_url option.
notification_driver = []	(MultiStrOpt) Driver or drivers to handle sending notifications.
notification_topics = notifications	(ListOpt) AMQP topic used for OpenStack notifications.
transport_url = None	(StrOpt) A URL representing the messaging driver to use and its full configuration. If not set, we fall back to the rpc_backend option and driver specific configuration.