GitLab

* Adding _ops and _weight_size metadata checks to tests

* Fixing wrong ops value

* Changing test_schema_meta_validation to instantiate the model only once

* moving instantiating quantized models inside get_ops

* Small refactor of test_schema_meta_validation logic

* Reverting to previous ops value

* Simplifying unquantized models logic in test_schema_meta_validation

* Update test/test_extended_models.py
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>
Co-authored-by: Toni Blaslov <tblaslov@fb.com>
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>