fix ut requirements
-tensorflow
-torch==1.5.0+cpu -f https://download.pytorch.org/whl/torch_stable.html
+intel-tensorflow==2.1.0
+--find-links https://download.pytorch.org/whl/torch_stable.html
+torch==1.5.0+cpu
+torchvision==0.6.0+cpu
pytorch-ignite
-torchvision
-importlib
-mxnet-mkl
+mxnet-mkl==1.6.0
numpy
ilit
