Small fixes in Dependency.cmake and run_test.py (#44414)
Summary:
Do not add gencode flags to NVCC_FLAGS twice: First time they are added in `cmake/public/cuda.cmake` no need to do it again in `cmake/Dependencies.cmake`
Copy `additional_unittest_args` before appending local options to it in `run_test()` method
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44414
Reviewed By: seemethere
Differential Revision: D23605733
Pulled By: malfet
fbshipit-source-id: 782a0da61650356a978a892fb03c66cb1a1ea26b
