Bug 20234: Make maintenance scripts use koha-zebra instead of koha-*-zebra

Bug 20234: Make maintenance scripts use koha-zebra instead of koha-*-zebra

This patch makes all maintenance scripts use **koha-zebra** instead of
the old **koha-*-zebra** scripts.

To test:
- Run:
  $ perl misc4dev/cp_debian_files.pl
  $ sudo service koha-common stop
=> SUCCESS: No errors and the Zebra-related sevices are stopped
  $ sudo service koha-common start
=> SUCCESS: No errors and the Zebra-related services are started
  $ sudo service koha-common restart
=> SUCCESS: No erros and Zebra-related services are running
  $ sudo koha-create --create-db test
=> SUCCESS: Instance created and zebra running for it
  $ sudo koha-disable test
=> SUCCESS: No errors and Zebra is stopped for instance test
  $ sudo koha-zebra --start test
  $ sudo koha-remove test
=> SUCCESS: No errors, instance removed, no Zebra running for test
- Sign off :-D

Sponsored-by: Orex Digital
Signed-off-by:  Hugo Agud hagud@orex.es
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>