Move TE/PyTorch UT to tests/pytorch/ (#78)

* move TE/PyTorch UT to tests/pytorch

1. move tests/* files to tests/pytorch/
2. adjust UT paths in qa/L0_unittest/test.sh
Signed-off-by: Ryan Jeng <rjeng@nvidia.com>

* update build.yml
Signed-off-by: Ryan Jeng <rjeng@nvidia.com>

---------
Signed-off-by: Ryan Jeng <rjeng@nvidia.com>

.github/workflows/build.yml

@@ -30,4 +30,4 @@ jobs:
       - name: 'Install'
         run: pip install --no-cache-dir wheelhouse/transformer_engine*.whl
       - name: 'Sanity check'
-        run: python tests/test_sanity_import.py
+        run: python tests/pytorch/test_sanity_import.py

qa/L0_unittest/test.sh

@@ -7,5 +7,5 @@ set -e
 : ${TE_PATH:=/opt/transformerengine}
 
 pip install pytest==6.2.5 onnxruntime==1.13.1
-pytest -v -s $TE_PATH/tests/test_transformerengine.py $TE_PATH/tests/test_fp8.py
-NVTE_FLASH_ATTN=0 pytest -v -s $TE_PATH/tests/test_onnx_export.py
+pytest -v -s $TE_PATH/tests/pytorch/test_transformerengine.py $TE_PATH/tests/pytorch/test_fp8.py
+NVTE_FLASH_ATTN=0 pytest -v -s $TE_PATH/tests/pytorch/test_onnx_export.py