Ignore pkls and zips and pts in .gitignore (#1462)
Summary:
running install.py could add zips --> don't have those show up with `git status`
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1462
Reviewed By: wconstab
Differential Revision: D43884284
Pulled By: janeyx99
fbshipit-source-id: 86a1b8f6bb4f41672b566aaef4c1d29483503cb7
