Using getdeps.py for build
Using getdeps.py for build

Summary:
OSS projects in Meta can use the `getdeps.py` script for building, so making it possible to build our own project using it.

Tested in ubuntu 20.04.

Reviewed By: avasylev

Differential Revision: D37570102

fbshipit-source-id: 30adc7d3fe1c2b3676ff1b157333c94e23143180

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly