Bug 15332: Sent DateTime object to DBIx::Class, not formatted dates

 Bug 15332: Sent DateTime object to DBIx::Class, not formatted dates

If formatted dates are sent to DBIx::Class on update/insert, the date
will be set as 0000-00-00 (except if the format is yyyy-mm-dd).

Test plan:
Use the batch patron modification tools to update the dateenrolled or
dateexpiry values for at least 1 patron.
Without this patch, the modified value will be updated to 0000-00-00,
with this patch, the correct value will be set.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit af7fb9cd48cdb47329e7b9bbe651e856e017aa13)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>