* optimize demo and cv reader

* remove needless import
Co-authored-by: Nwuzewu <wuzewu@baidu.com>

* finish coding predict

* optimize predict pr

* optimize _postprocessing

* optim namedtuple

* reconsitution reader and dataset

test=develop

add version match tips

* Add module v2

fix bs doc, fix serving port set

add multimachine support (mpi) for autofinetune.

fix bs multiprocessing problem

fix update_cache() with no newwork

* fix path bug

* fix environment variable autodl setting

Update Bert service

* add task hook