HAWQ-873. improve checking time for .travis.yml
HAWQ-873. improve checking time for .travis.yml

huor/incubator-hawq,jianlirong/incubator-hawq,stanlyxiang/incubator-hawq,outofmem0ry/incubator-hawq,outofmem0ry/incubator-hawq,huor/incubator-hawq,jianlirong/incubator-hawq,wengyanqing/incubator-hawq,outofmem0ry/incubator-hawq,wengyanqing/incubator-hawq,lavjain/incubator-hawq,jianlirong/incubator-hawq,stanlyxiang/incubator-hawq,huor/incubator-hawq,stanlyxiang/incubator-hawq,wengyanqing/incubator-hawq,jianlirong/incubator-hawq,wengyanqing/incubator-hawq,outofmem0ry/incubator-hawq,lavjain/incubator-hawq,wengyanqing/incubator-hawq,lavjain/incubator-hawq,huor/incubator-hawq,stanlyxiang/incubator-hawq,lavjain/incubator-hawq,lavjain/incubator-hawq,wengyanqing/incubator-hawq,stanlyxiang/incubator-hawq,outofmem0ry/incubator-hawq,wengyanqing/incubator-hawq,stanlyxiang/incubator-hawq,jianlirong/incubator-hawq,jianlirong/incubator-hawq,wengyanqing/incubator-hawq,lavjain/incubator-hawq,jianlirong/incubator-hawq,outofmem0ry/incubator-hawq,lavjain/incubator-hawq,stanlyxiang/incubator-hawq,outofmem0ry/incubator-hawq,huor/incubator-hawq,jianlirong/incubator-hawq,huor/incubator-hawq,huor/incubator-hawq,outofmem0ry/incubator-hawq,lavjain/incubator-hawq