Bug 21597: Field 'description' doesn't have a default value

Bug 21597: Field 'description' doesn't have a default value

Nick proposed another fix, see bug 21594.
The interface does not explode so I do not think we should make a DB
update in a rush.

Fix t/db_dependent/Koha/Object.t and t/db_dependent/Koha/ApiKeys.t

api_keys.description and api_keys.secret:
  `secret` varchar(191) COLLATE utf8mb4_unicode_ci NOT NULL,
  `description` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,

    #   Failed test 'Exception is thrown correctly'
    #   at t/db_dependent/Koha/Object.t line 262.
    # expecting: Koha::Exceptions::Object::FKConstraint
    # found: DBIx::Class::Exception (DBIx::Class::Storage::DBI::_dbh_execute(): Field 'description' doesn't have a default value at /home/vagrant/kohaclone/Koha/Object.pm line 125
    # )
    # Looks like you planned 7 tests but ran 1.
    # Looks like you failed 1 test of 1 run.

and later, but not related:
Can't locate object method "message" via package
"DBIx::Class::Exception" at t/db_dependent/Koha/Object.t line 264.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>