Fix inference unit test import error catching #2024
Merged
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Fixes the error we see here, when not running inference tests: https://github.com/microsoft/DeepSpeed/runs/6912710983?check_suite_focus=true#step:7:1409
This change also addresses a bug where an import error when
-m "inference"is passed to pytest and there is an import error, all tests are skipped, and the test succeedsAlso adds a check at the beginning of testing for expected torch and cuda versions (this is in response to seeing that pip will sometimes upgrade torch when setting up the environment)