Update the name of the trybot as well. BUG=webrtc:7853 NOTRY=True TBR=ehmaldonado@webrtc.org Change-Id: I296ee78b0a61b5a335e3bb794cbec72d85c15970 Reviewed-on: https://chromium-review.googlesource.com/547955 Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#18751}