Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48407
T79817692: Fused8BitRowwiseQuantizedToFloat operator support for c2_pt_converter.
Also refactored some repeated code from the existing test functions. (Initial commit only has refactoring.)
Test Plan: buck test //caffe2/torch/fb/model_transform/c2_convert:c2_pt_converter_test
Reviewed By: bugra
Differential Revision: D25069936
fbshipit-source-id: 72f6a845a1b4639b9542c6b230c8cd74b06bc5a0
