Summary:
Sometimes these 3 tests fail on CI. This was a constant issue this week with several teammates, so I've ignored these tests for now.

https://www.internalfb.com/intern/sandcastle/log/?instance_id=323401158&step_id=2953634697&step_index=7&name=Test%20litho%20targets

Reviewed By: cute-jumper

Differential Revision: D23542402

fbshipit-source-id: a29baf30deff2b60154b8cabba456db7c8e5bec8