Bug 14494: Unit tests for CanBookBeIssued related to dateexpiry

Bug 14494: Unit tests for CanBookBeIssued related to dateexpiry

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Moved the test on its own. Nicer than adding TestBuilder in the final part
of the test. No warnings/errors from TestBuilder, no dependency..

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>
(cherry picked from commit e0986f5a796b24d6fec00d849f7c71caf0dd5640)
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>