geoip: kill geoliteupdate in favor of geoipupdate

MaxMind's geoipupdate mechanism has a "hidden" feature that MaxMind
themselves pointed me to: GeoLite databases have their own
updates.maxmind.com product codes and there is a special UserID of
999999 with a LicenseKey of 000000000000 that has privileges to download
them.

Kill geoliteupdate in favor of using geoipupdate across the board. This
brings us a similar update mechanism for production & Labs, plus a
better program to fetch updates, as this one also does MD5 checks etc.

Change-Id: I34fb5b2d5253a9161d3c86c2e92375049c241775