NetworkRecommendationProviders require the location permission.

Any NetworkRecommendationProvider bound to by the system must have
access to location (i.e. it holds the location permission and
location is enabled on the device).

If the location permission is revoked then the binding will be
disconnected and the system will revert to the default network
recommendation provider (if set and valid). If location access
is disabled on the device then the binding will be disconnected
but the system won't fall back to the default provider (because
it won't have location either), instead the current provider will
be re-enabled when location access is enabled again.

BUG:62263953
Test: runtest frameworks-services -c com.android.server.NetworkScoreServiceTest
Test: runtest frameworks-services -c com.android.server.NetworkScorerAppManagerTest
Change-Id: I93c37eeda47840d92f3ca52767e878dc19b46740