Bug 10146 - koha-stop-zebra error handling

Bug 10146 - koha-stop-zebra error handling

koha-stop-zebra now
- Checks the instance exists.
- Checks the instance is enabled.
- Checks if the zebra daemon is already running.

Regards
To+

Edit: Corrected the die message

Sponsored-by: Universidad Nacional de Córdoba
Signed-off-by: Robin Sheat <robin@catalyst.net.nz>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
(cherry picked from commit 898e178c6ff3a79bf991defb60aec8ff58f107c6)

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
(cherry picked from commit 2e550307bedc8f198667f9c6a95b72fd33073a3e)

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
(cherry picked from commit 2e550307bedc8f198667f9c6a95b72fd33073a3e)