Migrated codes to the new package

TelephonyNetworkFactor and CellularDataService are used by
the new data stack. Moved to the new package before completely
removing com.android.internal.telephony.dataconnection.

Bug: 196597630
Test: atest FrameworksTelephonyTests
Change-Id: Id5f0011a932a90dc695a6c9f653533fb7791753f
1 file changed