Bump number of buck fetch retries
Bump number of buck fetch retries

Summary: Per title

Reviewed By: mihaelao

Differential Revision: D5329304

fbshipit-source-id: 906383b7817e536df4837613b4934a1722b8f1ed

facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho