Changes and fixes to prepare for dynamic conv (#68175)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68175
This slightly alters the way from_float works so it will work
with placeholder observers. It also fixes a but with ConvTranspose3d and
ConvTranspose1d where the parameters like kernel_size, stride...etc
weren't set properly. New tests were added to check for this type of
issue as well.
Test Plan:
python test/test_quantization.py TestQuantizedOps
python test/test_quantization.py TestStaticQuantizedModule
Imported from OSS
Reviewed By: z-a-f
Differential Revision: D32374004
fbshipit-source-id: caaa548d12d433d9c1fa0abc8597a7d31bb4e8af
