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02d83c9f - Standardize fast pipeline tests with PipelineTestMixin (#1526)

Standardize fast pipeline tests with PipelineTestMixin (#1526) * [WIP] Standardize fast pipeline tests with PipelineTestMixin * refactor the sd tests a bit * add more common tests * add xformers * add progressbar test * cleanup * upd fp16 * CycleDiffusionPipelineFastTests * DanceDiffusionPipelineFastTests * AltDiffusionPipelineFastTests * StableDiffusion2PipelineFastTests * StableDiffusion2InpaintPipelineFastTests * StableDiffusionImageVariationPipelineFastTests * StableDiffusionImg2ImgPipelineFastTests * StableDiffusionInpaintPipelineFastTests * remove unused mixins * quality * add missing inits * try to fix mps tests * fix mps tests * add mps warmups * skip for some pipelines * style * Update tests/test_pipelines_common.py Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com> Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>