Implement a wrapper method for MAPADDRESS requests
Implemented the map address wrapper method here.
Things to mention:
- Changed "SocksPort 0" to "SocksPort 29327" from the base torrc. (29327 is random)
- I wrote an external_ip() function in test.utils (a new file) which I'm not using right now. I'll be using this in a bunch of tests soon. It depends on http://ifconfig.me/ip being up.