Transport layer interface

For the purpose of interfacing with the transport layer (e.g. http, zmq) we will introduce a Python class that captures the actual marconi request data:

    class TransportLayerRequest(object):
        """Encapsulates a Marconi request and ist respective params."""
        endpoint = ''
        # e.g. [Create_Queue | List_Queues | Queue_Exists | ..]
        operation = ''
        params = dict()

The idea is to be declarative i.e. specify *what* is desired. It's up to the respective transport to turn this into an appropriate request.

The http transport would e.g. need to know whether to use a http GET or PUT and whether a certain parameter goes into the URL or into the request body.