When building a listing from shard containers, objects fetched from
each shard range are appended to the existing listing provided their
name is greater than the last entry in the current listing and less
than or equal to the fetched shard range. This allows misplaced
objects below the shard range to possibly be included in the listing
in correct name order. Previously that behaviour only occurred if the
existing listing had entries, but now it occurs even if no objects
have yet been found.
Change-Id: I25cab53b9aa2252c98ebcf70aafb9d39887a11f1
ff832955fc