Test for missing error queue

Hmm, dunno if this qualifies as a pull request, put it doesn't seem like the rabbitmq "integration" creates the error queue, leading to "nothing" being written to it when failing for the 5 time?

Probably something like:
https://github.com/mookid8000/Rebus/blob/master/src/Rebus/Transports/Msmq/MsmqConfigurationExtension.cs#L99
Should be done for rabbit aswell.

I would love to do the work, but maybe i need a hint in the right direction?