.circleci: Change conda image to be cuda specific (#51494)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/51494
The overall `pytorch/conda-cuda` image was getting to a ridiculous size
of 36GB so this splits up that image into cuda specific ones to try and
reduce the amount of things we have to download.
coincides with: https://github.com/pytorch/builder/pull/634
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: janeyx99
Differential Revision: D26281958
Pulled By: seemethere
fbshipit-source-id: 83b498532a6f04801952438537b564f998b62d94
