Increase default c10d/ProcessGroupGloo test timeout (#18916)
Summary:
See #18659.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/18916
Differential Revision: D14808749
Pulled By: pietern
fbshipit-source-id: 9a9c8beddb2dbbb1bf4c5e575743d9e1fa3f07fa
