Needed a simple way to check rabbitmq for connection and queue counts. This was
the quick dirty solution. Posting as it might be useful for others and a nice
beginning for a fuller featured plugin.

We used this with NRPE on the server where rabbitmq was doing it's thing.
Here's an example from our nrpe.cfg

command[rab_connection_count]=$USER1$/check_rabbitmq -a connection_count -C 100 -W 80
command[rab_queries_count]=$USER1$/check_rabbitmq -a queues_count -C 100 -W 80