Implement AMQP sole conn spec #2023

Job	Run time
Build new RabbitMQ	4m 6s
Build old RabbitMQ	3m 59s
Test 10k_queues_import + 3 node(s)	3m 13s
Test durable_queue + 1 node(s)	40s
Test durable_queue + 3 node(s)	1m 14s
Test 10k_queues_import + 1 node(s)	1m 46s
Test transient_queue + 3 node(s)	1m 21s
Test topic_bindings_import + 3 node(s)	1m 41s
Test topic_bindings_import + 1 node(s)	1m 7s
	19m 7s

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