Sleuth Stream question.. the out of the box behavior (I'm running snapshot) for rabbit is to create 2 queues, 'sleuth.default' and 'sleuth.sleuth'. The 2nd one is the one that seems is being read by the ZipkinStreamServer. It's got auto-delete on it. The first one gets all the messages though, and doesn't auto-delete. Is there a reason for this? Should I tweak this one to auto-delete too, or try to change which queue my services send messages to?