Add more logging when fetching layout test results.

Add more logging when fetching layout test results.

This changes logging in rebaseline_cl.py_and adds logging in buildbot.py.
Reason: Recently rebaseline-cl said it couldn't fetch results when it
appeared that results were actually archived.

If this happens again, a better log output would be helpful.

BUG=701963
Review-Url: https://codereview.chromium.org/2760463002
Cr-Commit-Position: refs/heads/master@{#457589}
Committed: https://chromium.googlesource.com/chromium/src/+/5c28e1999704819f1c19950bca846c982d7d8c76

[qyearsley, 2017-03-16 21:19:12]

qyearsley@chromium.org changed reviewers:
+ jeffcarp@chromium.org

[jeffcarp, 2017-03-16 21:29:40]

lgtm

[qyearsley, 2017-03-16 21:45:41]

The CQ bit was checked by qyearsley@chromium.org

[commit-bot: I haz the power, 2017-03-16 21:46:04]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-16 22:45:44]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489700741131730, "parent_rev":
"fb888fee214ab707ac40277f62e2c23d2e88ceb3", "commit_rev":
"5c28e1999704819f1c19950bca846c982d7d8c76"}

[commit-bot: I haz the power, 2017-03-16 22:46:28]

Description was changed from

==========
Add more logging when fetching layout test results.

This changes logging in rebaseline_cl.py_and adds logging in buildbot.py.
Reason: Recently rebaseline-cl said it couldn't fetch results when it
appeared that results were actually archived.

If this happens again, a better log output would be helpful.

BUG=701963
==========

to

==========
Add more logging when fetching layout test results.

This changes logging in rebaseline_cl.py_and adds logging in buildbot.py.
Reason: Recently rebaseline-cl said it couldn't fetch results when it
appeared that results were actually archived.

If this happens again, a better log output would be helpful.

BUG=701963

Review-Url: https://codereview.chromium.org/2760463002
Cr-Commit-Position: refs/heads/master@{#457589}
Committed:
https://chromium.googlesource.com/chromium/src/+/5c28e1999704819f1c19950bca84...
==========

[commit-bot: I haz the power, 2017-03-16 22:46:29]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/5c28e1999704819f1c19950bca84...