Minimize templated code in caffe2 operator wrapper (#16965)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16965
Instead of having one large templated function to wrap the caffe2 op, minimize the amount of templated code.
Non-templated code can be reused between different operators and decreases binary size.
Reviewed By: orionr
Differential Revision: D14018806
fbshipit-source-id: bedd4152eec21dd8c5778446963826316d210543
