Update to rabbitmq v3.3.5

Update version attribute

Enable remote guest user for RabbitMQ by emptying Rabbit
'loopback_users' in rabbit.config since the guest user is now (>3.3)
only functional when connecting on localhost by default.
Update policy provider to work with 3.3.5
Merge pull request #13 from git-harry/hfc

Update to install v3.3.5