Enabled hacking checks H305 and H307

* H305  imports not grouped correctly
* H307  like imports should be grouped together

Change-Id: I08dafc4fa150d2213b2bb002da7c9ee0ee517fac
declare DirectPublisher echanges with passive=True so they fail if the consumer isn't listening

Change-Id: I5ba4d311b97236d3a85a9f5badff61f12b08c12d
use conf.amqp_durable_queues and conf.amqp_auto_delete in Producers and Consumers

Change-Id: I9c6b074c85c350f39c755b9e1ce8e0ee2a865e22