[autotest] Utility scripts to crawl, rank, filter crbug.

Usage:
    ./contrib/crbug_shell.py
    ./contrib/crbug_crawler.py --reap
    ./contrb/crbug_crawler.py --labels "autofiled" --num 100 | grep\
        Untriaged

crbug_shell is setup to regenerate your credentials file using the
client secret in shadow_config. If neither is found it will fail.

TEST=Ran the scripts.
BUG=chromium:348040
CQ-DEPEND=CL:188527

Change-Id: Ie871c505eaaa45dbd86da84e81da7d3244712161
Reviewed-on: https://chromium-review.googlesource.com/188572
Reviewed-by: Prashanth B <[email protected]>
Tested-by: Prashanth B <[email protected]>
Commit-Queue: Prashanth B <[email protected]>
2 files changed