fix log level
fix log level

heikoheiko/pyethapp,kustomzone/pyethapp,ethereum/pyethapp,RomanZacharia/pyethapp,gsalgado/pyethapp,changwu-tw/pyethapp,RomanZacharia/pyethapp,d-das/pyethapp,ethereum/pyethapp,vaporry/pyethapp,gsalgado/pyethapp,changwu-tw/pyethapp