[autotest] Add the chameleon_vga suite and schedule it

Two Chameleons are deployed to the lab devices with VGA interface,
i.e. Alex and Parrot. Add a VGA suite and schedule it.

BUG=chromium:429931
TEST=site_utils/suite_scheduler/suite_scheduler.py --sanity

Change-Id: Ia8a1c42e07fccd0eeb0f67412b60cddf1adb3bd0
Reviewed-on: https://chromium-review.googlesource.com/234858
Tested-by: Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Kalin Stoyanov <kalin@chromium.org>
Commit-Queue: Wai-Hong Tam <waihong@chromium.org>
2 files changed