Fix CQ.cfg for Gerrit.
Fix CQ.cfg for Gerrit.

Follow up of https://codereview.chromium.org/2144723002.

BUG=627540
TBR=andybons@chromium.org

Review-Url: https://codereview.chromium.org/2139603004

primiano/depot_tools,primiano/depot_tools,primiano/depot_tools,CoherentLabs/depot_tools,CoherentLabs/depot_tools