Fixing providers for Puppet 3.x (Could not evaluate: Execution of '/usr/sbin/rabbitmq-plugins list -E' returned 1: erlexec: HOME must be set)
See also:
  * http://serverfault.com/questions/434942/veewee-vagrant-puppet-erlang-and-rabbitmq
  * https://github.com/kelseyhightower/puppet-homebrew/issues/5
  * http://projects.puppetlabs.com/issues/16779