Reorganize graphics SUITE and scheduling.

For automated testing use exactly one SUITE from {bvt-perbuild,
graphics_per-day, graphics_per-week}. There is also graphics_per-build but
currently it only runs once a day. See suite_scheduler.ini and
test_suites/control.graphics* for latest details.

As before, only fast, reliable and high value tests should be part of bvt-cq.
All bvt-cq tests should also be part of graphics_per-day to have clean non-cq
runs for sanity purpose.

To simplify bringup of new devices all graphics tests should also belong to
SUITE graphics and one of {graphics_system, graphics_browser} depending if
they are system or browser level tests.

BUG=None.
TEST=None.

Change-Id: I876b34eac2c481d8cfa11477fc28fadf0efefe7d
Reviewed-on: https://chromium-review.googlesource.com/221026
Tested-by: Ilja Friedel <ihf@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Haixia Shi <hshi@chromium.org>
Commit-Queue: Ilja Friedel <ihf@chromium.org>
55 files changed