infra: Trigger win-trace on angle_end2end_tests changes. This should prevent a common class of unexpected CQ breakage. Bug: angleproject:6670 Change-Id: Ic5706caedcb2ca326ec87883d695574e5450083c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3304555 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>