Move GeoFencer to services/core/java

Since the Location services files have moved,
GeoFencer is moved too

Change-Id: Ie16c62227c70bef26135f12f8f94cc358619c2ff

Conflicts:
	services/core/java/com/android/server/location/GeoFencerBase.java
	services/core/java/com/android/server/location/GeoFencerProxy.java