Enable safer lazy imports on edenfsctl

Summary:
We're currently working on a Safer version of Lazy Imports that programmatically can infer which modules are safe to load lazily and which need to be loaded eagerly.

This diff enables Safer Lazy Imports.

The import monitor shows a [p50 of 0.253 seconds of import overhead](https://fburl.com/scuba/imports_monitor_totals/6eoidai3) to optimize in our sampled runs.
Due to the sheer scope of edenfsctl's daily runs, even a 30% reduction off of the import overhead could yield 1+ EYS saved.

The marshal file is used to keep track of which files can be safely loaded lazily and which files will need to be loaded eagerly. A codemod is set up to keep the marshal file up to date.

References:
[Safer Lazy Imports Workplace Post](https://fb.workplace.com/groups/pyplat/permalink/1093600568929569)
[Safer Lazy Imports Users Wiki](https://www.internalfb.com/wiki/Python/Cinder/Onboarding/Tutorial/Lazy_Imports/Safer_Lazy_Imports/)

Reviewed By: jdelliot

Differential Revision: D67487780

fbshipit-source-id: 8b8f3bb33ba8898dcc97ecbd09663a64011541f6