transformers

1991da07 - [WIP] Ensure TF model configs can be converted to proper JSON (#14415)

[WIP] Ensure TF model configs can be converted to proper JSON (#14415) * test: make sure model configs are jsonifiable * fix: return python dict instead of config object * fix: accept pretrained config and use correct class * Re-enabling slow tests and applying them to core models only * Re-enabling slow tests and applying them to core models only * Add new test file to fetcher * Remove tooslow tests from test_modeling_tf_common.py * make style * Style fixes * Style fixes * Style fixes * Style fixes * Adding core tests to GPT2 and BART * Removing unused imports Co-authored-by: niklas.fruehauf <niklas.fruehauf@sovanta.com> Co-authored-by: matt <rocketknight1@gmail.com>