Combo Provider: Get the package name from resource

Get the package name for combo provider from resouce
instead of hardcoding the name. Also, geofence services
provider is renamed to differentiate from the hal
geofence provider

CRs-fixed: 608477

Change-Id: I84739e440d688d6e1784aa5ab4e2074eaa740bab
Conflicts:
services/core/java/com/android/server/LocationManagerService.java