Blacklist SwarmingValgrind build for datahopper
Blacklist SwarmingValgrind build for datahopper

BUG=skia:5149

Review URL: https://codereview.chromium.org/1881063002

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot