Upgrade Jackson 2.8.1
Upgrade Jackson 2.8.1

thkluge/gatling,GabrielPlassard/gatling,GabrielPlassard/gatling,GabrielPlassard/gatling,ryez/gatling,thkluge/gatling,ryez/gatling,thkluge/gatling,ryez/gatling,thkluge/gatling,GabrielPlassard/gatling,ryez/gatling