fix pscpu benchmark install paddle (PaddlePaddle#980)

* fix wide_deep gpups error when run in py>3.7

* set FLAGS_dynamic_static_unified_comm=False when psgpu

* [windows] bug fixs trainer divide-zero-bug

* add lightgcn and transformer_conv pglbox

* add centos PDC images for pglbox

* fix pscpu benchmark

* fix pscpu benchmark install paddle

test_tipc/test_train_inference_python.sh

@@ -284,7 +284,7 @@ if [ ${MODE} = "benchmark_train" ]; then
         export PADDLE_GLOO_FS_PATH=$gloo_fs_path
 
         cd ../
-        ${python} -m pip install paddlepaddle*.whl -U
+        ${python} -m pip install --force-reinstall paddlepaddle*.whl
         cd -
         CONFIG=$cpu_config_value
         SC="tools/static_ps_trainer.py -m "