Have test classes extend from common_utils.TestCase, not unittest.TestCase (#66900)
Summary:
This causes some functionality to not work, such as the disabling issues e.g., https://github.com/pytorch/pytorch/issues/66641
cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse SciPioneer H-Huang
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66900
Reviewed By: seemethere
Differential Revision: D31778293
Pulled By: janeyx99
fbshipit-source-id: df3023ddaf7969ffb60117d1e1d7e36d87bc6139
