Cook 3036

Other packages and cookbooks with a hard dependency on 'erlang' fail with the ESL package because that actually installs 'esl-erlang.'  This patch installs a fix detailed on the rabbitmq site: http://www.rabbitmq.com/install-rpm.html
 
It's basically an empty package called 'erlang.'

I hate this, but I hate it less than everything else I considered for fixing it. My feelings aren't hurt if someone wants to do it some other way.