Implemented marconi-server entry point

This patch adds the first console_script for marconi server.

In order to use it it's enough to run setup.py either using develop or
install.

Side changes:
    The config now uses sys.argv[1:] if no custom cli args have been
    set.

Implements blueprint transport-base

Change-Id: I15732129d66b32fca2b818e9105b17f541094983
Merge "Implemented marconi-server entry point"