Log to stdout only in production
Log to stdout only in production

It's good practice and also fixes a problem with Ruby 2.5.7
uvalib/avalon,uvalib/avalon,nulib/avalon,uvalib/avalon,nulib/avalon,avalonmediasystem/avalon,avalonmediasystem/avalon,avalonmediasystem/avalon,nulib/avalon,uvalib/avalon,nulib/avalon,avalonmediasystem/avalon