Fixing missing cpp tests for Caffe2 setup.py builds (#16037)
Summary:
These were broken (always skipped in setup.py builds) by https://github.com/pytorch/pytorch/pull/15917
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16037
Differential Revision: D13675549
Pulled By: pjh5
fbshipit-source-id: fed50855dd0b5d0c80fface3d8b2156f18aae4e7
