Fit a line - Auto shape

fix java doc and java client ip(default 127.0.0.1)-ysl

fix encryption get_data.sh bug

fix bert_web_service_gpu and fix doc

增加安装问题解答

cherry pick PR979 976

cherry-pick 971 970 967

Auto shape for Web Service

support cuda10.1 10.2 TensorRT and fix some bug

fix java client bug

Merge pull request #969 from TeslaZhao/develop

support multiple devices(cpu/gpu/trt/xpu/arm) in pipeline mode

fix python bug and add java example

[WIP]support arm and xpu

Update channel_acc_size

fix compile doc for trt

fix param name

2.0 develop first commit

Update pip version

Update  pip install paddle-serving-app==0.2.0

brpc reduce BTHREAD_MIN_CONCURRENCY from 4 to 2