add rabbit mq cient aim to deliver game results. (reverted from commit 8b104e7fbf613132ee06746ecc51d4232cb2a28a)

NOTE: Marking messages as persistent doesn't fully guarantee that a message won't be lost. Although it tells RabbitMQ to save the message to disk, there is still a short time window when RabbitMQ has accepted a message and hasn't saved it yet.