add rabbitmq-3.3

Add a modern RabbitMQ
- Why change from `(` to `{`? We use `%w()` everywhere else in omnibus-software.
- Do these binarys need symlinked on the old version of rabbitmq as well? Are we sure these binaries exist in the old version? If they don't, this will raise an exception when building the old rabbitmq. If they do, why are we only linking them now?