Bug 14532: Add --exclude-indexes switch to koha-dump

Bug 14532: Add --exclude-indexes switch to koha-dump

This patch changes the default behaviour of koha-dump to make the inclusion
of Zebra indexes on the dump optional. It does so by introducing a new option
switch that allows to have the previous behaviour in place.

To test:
- Run
  $ koha-dump your_instance
- Save a copy of the dump files
- Apply the patch / extract the koha-dump script
- Run the new one:
  $ koha-dump your_instance
=> SUCCESS: Verify the contents of the dump are the same
   (i.e. it includes /var/lib/koha/your_instance)
- Run with the new switch:
  $ koha-dump --exclude-indexes your_instance
=> SUCCESS: The dump does not contain stuff from /var/lib/koha/your_instance
- Go through the rest of the new option switches
  -h | --help
  -q | --quiet
=> SUCCESS: They work as expected.
- Sign off :-D

Regards

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com