[milo] update test presentation config to show GPU column So it will be easier for users to distinguish tests run on different GPUs. R: jmadill,ynovikov BUG: chromium:1249703 Change-Id: I393d305c963f5fc654c9c32fc86cda6c7f019086 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3195351 Commit-Queue: Yuly Novikov <ynovikov@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>