Buck doesn't support navigation resources directories

Created by: runningcode

When using the new android navigation architecture component https://developer.android.com/topic/libraries/architecture/navigation/

Buck throws the following exception

com.facebook.buck.android.aapt.MiniAapt.ResourceParseException: 'buck-out/gen/registration/res_debug#resources-symlink-tree/res/navigation' is not a valid resource sub-directory.

This happens when adding a file under res/navigation in any android project.