I don't think we need to backoff after a 401 - we have a perfectly valid
response telling us exactly what we should do so we can do that right away and
move on.
Assuming you run functional tests at least once a day, according to
http://xkcd.com/1205/ and my benchmarks you can spend roughly a full day
reviewing this change and still come out ahead.
Change-Id: I27c42c4ee3254eb32aad4d3dac08b16b3a43d611
555e9894ee