Bug 21832: add unit test

Bug 21832: add unit test

Adds a check that is_expired exists in service GetPatronInfo.

Test plan :
Run : prove t/db_dependent/ILSDI_Services.t

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Amended patch: remove ref to bug number, we have git for that

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit 20ce110f5c656f51bad262708d4b577568c1a52a)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>