Merge pull request #6812 from wangjingyeye/dyg_db

[tipc] rename db++ to db_plusplus

test_tipc/configs/det_r50_db++/train_infer_python.txt → test_tipc/configs/det_r50_db_plusplus/train_infer_python.txt

 ===========================train_params===========================
-model_name:det_r50_db++
+model_name:det_r50_db_plusplus
 python:python3.7
 gpu_list:0|0,1
 Global.use_gpu:True|True

test_tipc/prepare.sh

@@ -59,7 +59,7 @@ if [ ${MODE} = "lite_train_lite_infer" ];then
         wget -nc -P ./inference/ https://paddleocr.bj.bcebos.com/dygraph_v2.0/table/en_ppocr_mobile_v2.0_table_rec_infer.tar --no-check-certificate
         cd ./inference/ && tar xf en_ppocr_mobile_v2.0_table_det_infer.tar && tar xf en_ppocr_mobile_v2.0_table_rec_infer.tar && cd ../
     fi
-    if [[ ${model_name} =~ "det_r50_db++" ]];then
+    if [[ ${model_name} =~ "det_r50_db_plusplus" ]];then
         wget -nc -P ./pretrain_models/ https://paddleocr.bj.bcebos.com/dygraph_v2.1/en_det/ResNet50_dcn_asf_synthtext_pretrained.pdparams --no-check-certificate
     fi
     if [ ${model_name} == "table_master" ];then