Export the cosine_similarity op as an ATenOp correctly (#21884)
Summary:
cosine_similarity has two non-tensor parameters, needs some special handling. Add the support for its export in this diff.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21884
Reviewed By: zrphercule
Differential Revision: D15866807
Pulled By: houseroad
fbshipit-source-id: a165fbc00c65c44b276df89ae705ca8960349d48
