===========================serving_params===========================
model_name:ppmatting
python:python3.7
trans_model:-m paddle_serving_client.convert
--dirname:./test_tipc/inferences/ppmatting/modnet-mobilenetv2
--model_filename:model.pdmodel
--params_filename:model.pdiparams
--serving_server:./test_tipc/serving_cpp/serving_server/
--serving_client:./test_tipc/serving_cpp/serving_client/
serving_dir:./test_tipc/serving_cpp
--model:serving_server
--op:GeneralSegOp
--port:9997
--gpu_id:"0"|null
cpp_client:serving_client.py
--input_name:img
--output_name:sigmoid_2.tmp_0