.github: Enable onnx tests (#66513)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66513
These were missed in the migration of onnx to github actions.
Adds ort tests with 2 shards for the onnx workflow
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: malfet
Differential Revision: D31599433
Pulled By: seemethere
fbshipit-source-id: 73dce0d3017c4280e64f0c8578e2be7ef6a168d6
