86bc5b11fe
Directory lister comes with a filter function that tells lister which entries to skip by its .get() method. For uniformity, add the same to S3 bucket_lister. After this change the lister reports shorter name in the returned directory entry (with the prefix cut), so also need to tune up the unit test respectively. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>