Turn Caffe2 CUDA 9.1 + py2 to CUDA 10.1 + py3 (#26835)
Summary:
For TensorRT test introduced in https://github.com/pytorch/pytorch/pull/26426
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26835
Reviewed By: hl475
Differential Revision: D17580108
Pulled By: houseroad
fbshipit-source-id: c57fafec228b78c26b8a7946c92ad7434425bbd4
