fixing of usage of rel_tol for test adadelta (#71880)
Summary:
Recently I made a PR to change some test tolerances: https://github.com/pytorch/pytorch/pull/69919
It turns out that the previous decorator does not work with the test optim unit test framework. I have summarized the issue in the following doc:
https://docs.google.com/document/d/1BOrp29r31A2WXwM0O6ydsCs43wi01sAgdduKd7is_ec/edit?usp=sharing
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71880
Reviewed By: cpuhrsch
Differential Revision: D33801967
Pulled By: jbschlosser
fbshipit-source-id: 094feba10e2ee2a94e3ab754e4140e16b634ea09
(cherry picked from commit d504ddd950f69a6784b93a2e7630d24d5c7051fe)
