This change allows callers with the NETWORK_STACK or
PERMISSION_NETWORK_STACK to receive administrator UIDs. This will be
used by the VCN to ensure that administrator UIDs are accurately
populated, ensuring that the ConnectivityDiagnostics are triggered for
the VCN.
Bug: 193204385
Test: atest ConnectivityServiceTest
Change-Id: I3ecfbef6847dcc78adac05d0229719c97e3a220c