fix incorrect callback param name
clean up return value on two rpc calls
minor - remove unnecessary type information
Merge pull request #51 from stewartoallen/at-pull-rpc-fixups

fix incorrect callback param name
mqworkers use list bundles in their output sinks
Merge branch 'master' of https://github.com/addthis/hydra into sewing-106-mesh-mq
on-demand creation of producer queues based on routing keys
fix first-time creation bug for queues