Allow to keep old python style for existing files.

https://webrtc-review.googlesource.com/c/src/+/321081 made PEP-8 mandatory for WebRTC python file.

This CL allows to keep the old formatting style for existing python files because switching all methods and functions name from PascalCase to snake_case is non trivial.

Change-Id: Id094bbf72ee1c3c32027a49bc9763bc65dfb9ad2
Bug: None
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/323860
Reviewed-by: Harald Alvestrand <[email protected]>
Commit-Queue: Jeremy Leconte <[email protected]>
Reviewed-by: Christoffer Jansson <[email protected]>
Cr-Commit-Position: refs/heads/main@{#40951}

Author: jleconte2

OWNERS_INFRA

@@ -10,6 +10,7 @@ per-file [email protected],[email protected],[email protected]
 per-file AUTHORS=*
 per-file DEPS=*
 per-file [email protected],[email protected],[email protected]
+per-file [email protected],[email protected],[email protected]
 per-file WATCHLISTS=*
 per-file [email protected]
 per-file [email protected]