Current timing constraints are too tight that the test sometimes fails
when it shouldn't.
BUG=chrome-os-partner:19236
TEST=Pass the test
BRANCH=None
Change-Id: Ib94ff44691ba36f14dbf02319d0371770b5ece5d
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/51250
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>