Bug 21832: add is_expired to ILS-DI example

Bug 21832: add is_expired to ILS-DI example

Test plan :
1) Apply patch
2) Enable ILS-DI
3) Go to <opac URL>/cgi-bin/koha/ilsdi.pl?service=Describe&verb=GetPatronInfo
4) Check you see is_expired in example response

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit c0df2d0e8612e1ca428f51462fcfb99fbc3f0009)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit fffb7b3c6a3762683920aa5448a6128944bf21e1)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>