[caffe2] fix type and shape inference for common gradient ops (#35857)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35857
This fixes a lot of common ops for InferBlobShapesAndTypes as well as adds support for testing the inferred shapes and types of gradient ops.
Ops:
* Concat
* Split
* LeakyReLU
* Relu
* Prelu
* Gelu
* Elu
* Sinh, Tanh, Cosh
* Abs
* ... and a number of other simple element wise ops
Test Plan:
Added support to hypothesis test to check the shape and type of gradient ops.
Enabled it for all the ops I fixed the shape and type inference for.
buck test caffe2/caffe2/python/operator_test:
Reviewed By: pradeepd24
Differential Revision: D20806284
fbshipit-source-id: 77f796d9ff208e09e871bdbadf9a0a7c196b77f2
