czr-gc

## 测试结果： ### example测试： 测试覆盖fastdeploy [readme](https://github.com/PaddlePaddle/FastDeploy/tree/develop/examples/vision/classification/paddleclas) 中提供的除inceptionV3以外所有模型，用一张图片测试推理。 - 测试脚本: ``` import os import re import subprocess model_list = { "PPLCNet_x1_0":"https://bj.bcebos.com/paddlehub/fastdeploy/PPLCNet_x1_0_infer.tgz", "PPLCNetV2_base":"https://bj.bcebos.com/paddlehub/fastdeploy/PPLCNetV2_base_infer.tgz", "EfficientNetB7":"https://bj.bcebos.com/paddlehub/fastdeploy/EfficientNetB7_infer.tgz", "EfficientNetB0_small":"https://bj.bcebos.com/paddlehub/fastdeploy/EfficientNetB0_small_infer.tgz", "GhostNet_x1_3_ssld":"https://bj.bcebos.com/paddlehub/fastdeploy/GhostNet_x1_3_ssld_infer.tgz", "GhostNet_x0_5_ssld":"https://bj.bcebos.com/paddlehub/fastdeploy/GhostNet_x0_5_infer.tgz", "MobileNetV1_x0_25":"https://bj.bcebos.com/paddlehub/fastdeploy/MobileNetV1_x0_25_infer.tgz", "MobileNetV1_ssld":"https://bj.bcebos.com/paddlehub/fastdeploy/MobileNetV1_ssld_infer.tgz", "MobileNetV2_x0_25":"https://bj.bcebos.com/paddlehub/fastdeploy/MobileNetV2_x0_25_infer.tgz", "MobileNetV2_ssld":"https://bj.bcebos.com/paddlehub/fastdeploy/MobileNetV2_ssld_infer.tgz", "MobileNetV3_small_x0_35_ssld":"https://bj.bcebos.com/paddlehub/fastdeploy/MobileNetV3_small_x0_35_ssld_infer.tgz",...

解决develop 分支冲突出了点差错，git amend 冲突正确的改动上来

感谢！ 另外，对于async接口，fp16会出现空数据/空指针的情况，原因是以下函数没有处理float16的情况，导致分配的内存为0， 需要增加float16的判断： ``` if (dtype == paddle::PaddleDType::FLOAT16) { return sizeof(float)/2; } ``` https://github.com/PaddlePaddle/Serving/blob/48540ef2cbdb976603a58225572a507943b35625/core/predictor/framework/bsf.h#L209 https://github.com/PaddlePaddle/Serving/blob/48540ef2cbdb976603a58225572a507943b35625/core/predictor/framework/bsf.h#L1089