Update hapi.model._save_inference_model by using new features of dy2stat in 2.0-beta API#27272

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guoshengCS merged 13 commits intoPaddlePaddle:developfrom

LiuChiachi:update_save_inference_model_using_2.0-beta_dy2sta

Sep 17, 2020

Commits on Sep 14, 2020

Commits on Sep 16, 2020

update doc for save, remove requirments and limitations for using
LiuChiachi
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Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into update_save_inference_model_in_hapi
LiuChiachi
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update doc for class Model
LiuChiachi
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Commits on Sep 17, 2020

solve conflicts
LiuChiachi
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