drivers/amazonec2: logs userdata file error
drivers/amazonec2: logs userdata file error

Signed-off-by: André Carvalho <cfe6901433036929a89ffc229c7040a9bd48955e@gmail.com>

dgageot/machine,SvenDowideit/machine,SvenDowideit/machine,Herbis/machine,exoscale/docker-machine,ibuildthecloud/machine,dgageot/machine,ibuildthecloud/machine,dweomer/docker-machine,exoscale/docker-machine,londoncalling/machine,dweomer/docker-machine,docker/machine,voutilad/machine,voutilad/machine,Herbis/machine,docker/machine,londoncalling/machine