Make bucket names explicit in cq.cfg.

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

NOTRY=True
BUG=chromium:617627
R=rmistry@google.com,sergiyb@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2096733005

Review-Url: https://codereview.chromium.org/2096733005
1 file changed