Adds generic device tests to test_autograd.py (#26248)
Summary:
- Adds new decorators for skipping on ROCm, skipping on MKL, running only on the CPU and running only on CUDA
- Makes decorator skip semantics consistent
- Adds CUDA default stream requirement to MAGMA decorator
- Creates TestAutogradDeviceType
Note this PR originally moved test_cdist, but moving it caused failures in CI. There may be an undiagnosed issue with cdist or the test. The issue does not reproduce locally.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26248
Test Plan: Change is to tests themselves.
Differential Revision: D17410386
Pulled By: mruberry
fbshipit-source-id: 8459df44f2a00f0e71680fbe713587a01d4b0300
