VLV: fix handling with show_deleted and similar controls

VLV: fix handling with show_deleted and similar controls

The first search in each round of VLV performs the search then saves
the results in the form of an array of GUIDs, which subsequent calls
refer to to get different ranges from the same search. These
subsequent calls make an individual search for each GUID. If the
original search had the show_deleted control, the array may contain
GUIDs for deleted items, which would not be seen on the later
searches without the same control.

So we save all controls except the VLV itself and the sort control
(which won't affect the search for a single GUID) and reuse them on
the  subsequent VLV searches.

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>