Fix default warmpUrl, close gatling/gatling#2876
Fix default warmpUrl, close gatling/gatling#2876

wiacekm/gatling,MykolaB/gatling,gatling/gatling,thkluge/gatling,GabrielPlassard/gatling,ryez/gatling,GabrielPlassard/gatling,GabrielPlassard/gatling,pwielgolaski/gatling,pwielgolaski/gatling,ryez/gatling,gatling/gatling,wiacekm/gatling,thkluge/gatling,thkluge/gatling,gatling/gatling,timve/gatling,timve/gatling,MykolaB/gatling,gatling/gatling,wiacekm/gatling,thkluge/gatling,MykolaB/gatling,GabrielPlassard/gatling,wiacekm/gatling,pwielgolaski/gatling,MykolaB/gatling,timve/gatling,wiacekm/gatling,pwielgolaski/gatling,timve/gatling,gatling/gatling,ryez/gatling,ryez/gatling