always resize_ min/max outputs (#39696)
Summary:
Resubmit of https://github.com/pytorch/pytorch/issues/36474. Addresses the comment in https://github.com/pytorch/pytorch/issues/35591, and makes behavior with `out` kwarg consistent with other functions that `resize_` their passed out.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39696
Differential Revision: D21947473
Pulled By: ngimel
fbshipit-source-id: 072f2bd156cc55b87ed64cf47c44b527e5e0b82c
