Wrap the resumable bundle upload in a loop of up to _MAX_UPLOAD_ATTEMPTS (3)
attempts. On httplib2.error.RedirectMissingLocation, recreate MediaFileUpload
(resumable uploads cannot reuse the same object) and wait 10 s / 20 s before
retrying. After all attempts are exhausted, raise RuntimeError chained to the
last exception. Add tests covering the retry path, backoff delays, fresh
MediaFileUpload on each attempt, and exhaustion.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>