Fix rabbitmq adapter builds.
Fix rabbitmq adapter builds.

 * Switch to pyclean
 * Make this a single layer docker image

REANNZ/faucet,shivarammysore/faucet,anarkiwi/faucet,faucetsdn/faucet,shivarammysore/faucet,REANNZ/faucet,mwutzke/faucet,anarkiwi/faucet,mwutzke/faucet,faucetsdn/faucet