Print out runnable repros with better time metadata (#1783)
Summary:
This way, it is easy to just copy/paste the command into a CLI
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1783
Reviewed By: xuzhao9
Differential Revision: D47737107
Pulled By: janeyx99
fbshipit-source-id: 0b73685d91f7f4ce12cb578631a6bdc105c2a309
