Make bucket names explicit in cq.cfg.
Make bucket names explicit in cq.cfg.

Don't assume bucket name to start with 'master.'.

NOTRY=True
BUG=chromium:617627
R=sergiyb@chromium.org

Review-Url: https://codereview.chromium.org/2096013002

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