[autotest] Modify suite_scheduler.ini to use tot idioms.

This cl also refactors suites in the ini file so they run using tot
to run nightly, and >=tot-2 weekly.  This is only necessary till the
lab team has had the time to rethink suite scheduler idoms, which
has currently been de-prioritized over more global performance
and stability changes to the infrastructure.

TEST=Ran suite scheduler, unittests.
BUG=chromium:417131,chromium:423847
CQ-DEPEND=CL:223811

Change-Id: Ief74bd633c52e056ec30645e1407f823ef4a4fd4
Reviewed-on: https://chromium-review.googlesource.com/223860
Tested-by: Prashanth B <beeps@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Prashanth B <beeps@chromium.org>
1 file changed