Skip couple UniformBufferTest31 on Linux AMD Broken by https://chromium-review.googlesource.com/c/522874/ on Linux Release (AMD R7 240) build 2431 BUG=angleproject:1897 TBR=jmadill@chromium.org Change-Id: I4c1f99a839f215b4c284ae1667d0a3b0774281c7 Reviewed-on: https://chromium-review.googlesource.com/557259 Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>