[Fix Bug 1029326] Prevent duplicate region and city cases for geocode migrate.
[Fix Bug 1029326] Prevent duplicate region and city cases for geocode migrate.

johngian/mozillians,justinpotts/mozillians,ChristineLaMuse/mozillians,chirilo/mozillians,mozilla/mozillians,hoosteeno/mozillians,fxa90id/mozillians,ChristineLaMuse/mozillians,mozilla/mozillians,akarki15/mozillians,mozilla/mozillians,fxa90id/mozillians,hoosteeno/mozillians,akatsoulas/mozillians,johngian/mozillians,brian-yang/mozillians,akatsoulas/mozillians,ChristineLaMuse/mozillians,brian-yang/mozillians,safwanrahman/mozillians,justinpotts/mozillians,fxa90id/mozillians,akarki15/mozillians,safwanrahman/mozillians,anistark/mozillians,akatsoulas/mozillians,chirilo/mozillians,chirilo/mozillians,brian-yang/mozillians,akatsoulas/mozillians,hoosteeno/mozillians,mozilla/mozillians,fxa90id/mozillians,anistark/mozillians,johngian/mozillians,anistark/mozillians,anistark/mozillians,hoosteeno/mozillians,justinpotts/mozillians,akarki15/mozillians,johngian/mozillians,safwanrahman/mozillians,akarki15/mozillians,brian-yang/mozillians,safwanrahman/mozillians,justinpotts/mozillians,chirilo/mozillians