Repeated CallMeMaybe messages over DERP can each log a new contact for
the same peer, flooding stderr. Mark the DERP, direct, and control-netmap
latency messages [v1] so they remain in diagnostic uploads but only
reach stderr with --verbose=1.
Updates #12639
Updates #21765
Change-Id: Ic7ee47c699e5698f61358a72c6fd7776e1caf8dc
Signed-off-by: kenneth topp <toppk@bllue.org>