Bug 10667: Follow up - prevent t/00-load from failing

Bug 10667: Follow up - prevent t/00-load from failing

To test:
- Apply first 2 patches for unit tests and changes to Services.pm
- Turn off mysql
- Run t/00-load.t
- Verify that the test fails.
- Apply this third patch.
- Run t/00-load.t again.
- Verify this time it passes.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: Work well, no koha-qa errors.

Without third patch and mysql down, test fails,
with third patch it succeed.
Signed-off-by: Mason James <mtj@kohaaloha.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 8e0c21cf38b930c207d2efab4a3b55e359b95b89)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>