Change linter to look for Apache-2 in Litho
Change linter to look for Apache-2 in Litho

Summary: Apply the Apache-2 license header for Litho files.

Reviewed By: zertosh

Differential Revision: D7552252

fbshipit-source-id: edb1363c93cb6580bcd58e5eebc45cf0bca7b5fb

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