Skip SimpleOperationTest.DrawQuadAndSwap on Linux Intel Vulkan Was flaky. BUG=angleproject:2301 Change-Id: Id71cf6c43e133810c64535bbde494d12546b0adc Reviewed-on: https://chromium-review.googlesource.com/854978 Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>