blueprint amqp-rpc-fast-reply-queue

For AMQP based RPC, specifically RabbitMQ and Qpid, this change replaces the
dynamically created RPC call reply queue with a single queue that is created
on the first RPC call and used on all subsequent calls. It provides backward
compatibility on the callee side by recognizing downlevel callers and on the
caller side by adding a config option to revert to the old dynamically
created queue based upon the msg_id.

Change-Id: Idb09a71472866bd3950f58d4f7f45a3181eb40fc