Remove old branches from chameleon test suites

This is to relax the weekend schedule for chameleon test suites
- Removing ToT-1 and ToT-2 from weekly runs
- Added ToT-2 to chameleon perbuild  suites schedule

BUG=chromium:560951
TEST=None

Change-Id: Idbddf43df41af030c84fb7133e53086b2377aaf3
Reviewed-on: https://chromium-review.googlesource.com/315807
Commit-Ready: Kalin Stoyanov <kalin@chromium.org>
Tested-by: Kalin Stoyanov <kalin@chromium.org>
Reviewed-by: Dan Shi <dshi@google.com>
1 file changed