Fix lookup of rabbitmq server

We need to connect to the VIP of Rabbitmq, not some
arbitrary random IP that might or might not be online.
Merge pull request #5 from dirkmueller/rabbitmq

Fix lookup of rabbitmq server
Remove trailing whitespace
Fix Python install

chef-client was endlessly unpacking python on the system and
not proceeded due to the installed sentinel not existing in our
archive. Fix it up to match what we install.