* s3: don't report a version delete as done when the filer lookup failed
deleteSpecificObjectVersion treated any getEntry error as "entry is gone":
- the null-version precheck returned success without deleting anything,
- the recheck after a failed rm returned success while the entry may
still be there,
- a failed .versions lookup was read as "not the latest version", so the
latest blob was removed without repointing the pointer first.
Only filer_pb.ErrNotFound now counts as a miss. Other errors fail the
delete, so the S3 client or the lifecycle worker retries it. The lookups
go through retryFilerOp, like the other .versions reads in this file, so
a single transient filer error doesn't turn into a 500.
* s3: include recheck error when a version delete fails
* s3: recheck a failed version delete once instead of retrying
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Co-authored-by: Mansur Akhmadi <10739460+mansur-akhmadi@users.noreply.github.com>
