use aliyun when install paddlenlp

test_tipc/prepare.sh

@@ -108,7 +108,7 @@ if [ ${MODE} = "benchmark_train" ];then
     fi
     if [ ${model_name} == "layoutxlm_ser" ]; then
         pip install -r ppstructure/vqa/requirements.txt
-        pip install paddlenlp\>=2.3.5 --force-reinstall
+        pip install paddlenlp\>=2.3.5 --force-reinstall -i https://mirrors.aliyun.com/pypi/simple/
         wget -nc -P ./train_data/ https://paddleocr.bj.bcebos.com/ppstructure/dataset/XFUND.tar --no-check-certificate
         cd ./train_data/ && tar xf XFUND.tar
         # expand gt.txt 10 times
@@ -222,7 +222,7 @@ if [ ${MODE} = "lite_train_lite_infer" ];then
     fi
     if [ ${model_name} == "layoutxlm_ser" ]; then
         pip install -r ppstructure/vqa/requirements.txt
-        pip install paddlenlp\>=2.3.5 --force-reinstall
+        pip install paddlenlp\>=2.3.5 --force-reinstall -i https://mirrors.aliyun.com/pypi/simple/
         wget -nc -P ./train_data/ https://paddleocr.bj.bcebos.com/ppstructure/dataset/XFUND.tar --no-check-certificate
         cd ./train_data/ && tar xf XFUND.tar
         cd ../