Bug 21479: Zebra index can return different result

Bug 21479: Zebra index can return different result

If the zebra index has been rebuilt by previous tests, the order/results
will be different, and we will not have biblionumber 1, 3, 5

Let make this more flexible

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit e7574481b19addd2747baf5917e772d28cd38bc5)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 351dfa737bc0f4b46f4aab47dfa635943065df48)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>