Bug 21286: Add Corporate-name as phrase to zebra indexes

Bug 21286: Add Corporate-name as phrase to zebra indexes

When using Zebra for searching, Koha performs a number of searches in order
to improve relevancy. This means that even for 'wordlist' search, we perform a phrase search.

When selecting 'Corporate-name' as an index, this expansion of the search causes errors and fails
the search

We can fix this for 'Corporate-name' searches by adding a phrase index

To test:
 1 - Edit koha-conf.xml and uncomment the zebra debug line and add 'request' to the list
 2 - Restart all
 3 - tail -f /var/log/koha/kohadev/zebra-output.log
 4 - Edit a record to add a 110 field e.g. 'House plants'
 5 - Enable syspref IntranetCatalogSearchPulldown
 6 - Search for 'Corporate name' and term 'House plants'
 7 - No results
 8 - View the log, see 'ERROR' and full search terms listed
 9 - Apply patch
10 - copy the zebra files to the production instance:
    cp etc/zebradb/marc_defs/marc21/biblios/biblio-koha-indexdefs.xml /etc/koha/zebradb/marc_defs/marc21/biblios/biblio-koha-indexdefs.xml
    cp etc/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl /etc/koha/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl
11 - restart all
12 - rebuild: sudo koha-rebuild-zebra -v -f kohadev
13 - Repeat search
14 - Success!

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>