* Enable ngraph python tests
* Refactor and unify ngraph with onnx python tests
* Revert deprecated test cases
* Set ngraph and onnx python tests as a one test suite execution
* Change unstrict Xfails to strict ones
* Update after review:
- add model zoo to onnx tests,
- improvements of tests
* Revert mounting zoo models dir
Co-authored-by: Michał Karzyński <4430709+postrational@users.noreply.github.com>
* Try fix parsing error.
* Small exception refinements during importing model.
* More exception refinements.
* Skip segfaulting tests.
* More clear error types and messages. Func rename.
* Fix typo.
* Check on CI whether test_onnx will work.
* Add only those file which pass tests or have failing ones skipped.
Rafal Blaczkowski