add new WHIRLPOOL_COORDINATOR_ONION config option
when set to on
, whirlpool client will contact the coordinator on its onion address
when set to off
, whirlpool client will contact the coordinator on its clearnet address
default value = on
when set to on
, whirlpool client will contact the coordinator on its onion address
when set to off
, whirlpool client will contact the coordinator on its clearnet address
default value = on