suppress errors in `thrift/lib/py3/test`
suppress errors in `thrift/lib/py3/test`

Differential Revision: D23774322

fbshipit-source-id: e594630f90a4808401fe531b4fcfdc668bcab0b0

facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift