Use Go 1.5.1 on Travis
Use Go 1.5.1 on Travis

kalistace/envconsul,x-cray/envconsul,kalistace/envconsul,bounceexchange/envconsul,hashicorp/envconsul,hashicorp/envconsul,x-cray/envconsul,bounceexchange/envconsul