cbuildbot_config: Add Oak public/private builders.

Add oak 'full', 'paladin', and 'canary' builders.

BUG=chrome-os-partner:39763
TEST=`./cbuildbot/cbuildbot_config_unittest`

Change-Id: I231f3faddd7c95fc03611877bee6fd9d97e1e614
Reviewed-on: https://chromium-review.googlesource.com/269004
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Tested-by: Daniel Jacques <dnj@chromium.org>
Commit-Queue: Daniel Jacques <dnj@chromium.org>
2 files changed