Triggers more often on tsanv2 in parallel, suppressing for now to get
the parallel bot into the main waterfall.
BUG=chromium:445880, webrtc:5152
R=kjellander@webrtc.org
Review URL: https://codereview.webrtc.org/1428033002 .
Cr-Commit-Position: refs/heads/master@{#10480}