Allow specification of the node we wish to connect to.
Fix whitespace, changing tabs to spaces.
Update rabbitmq_user/vhost/parameter to pass the node to rabbitmqctl using -n flag to rabbitmqctl rather than setting the environment variable.
Merge pull request #2867 from cstorey/rabbitmq_user-node-parameter

Allow specification of erlang node name for rabbitmq_user/vhost/parameter actions.