Add switch-cuda utility to docker image (#1341)
Summary:
For release-testing purpose on A100
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1341
Reviewed By: weiwangmeta
Differential Revision: D42003404
Pulled By: xuzhao9
fbshipit-source-id: eb718a2e8b5db2f31a92c6f618c80ad6197f3662
