Canonicalize includes in aten, and add tests for it (#36301)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/36301
Test Plan: Imported from OSS
Differential Revision: D20943004
Pulled By: ezyang
fbshipit-source-id: 4f4d3a5be40f3caedea94fab11d7c7810913ddc1
