Bug 27276: Prevent borrowers-force-messaging-defaults.pl to crash

Bug 27276: Prevent borrowers-force-messaging-defaults.pl to crash

MySQL 5.7 does not allow queries using 0000-00-00

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit f228c9ee9fc7094054b687b26ae4306254922019)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 1b4f18148ba2192afb247ac3e8b87676f4647245)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>