Bug 28364: Make log4perl.conf belong to the instance user

Bug 28364: Make log4perl.conf belong to the instance user

This patch makes koha-create generate the log4perl.conf file for the
instance, belonging to the instance user. This is done in order to have
the z3950 responder work.

My original idea was to make the responder accept a '-g' parameter but
that is not supported by Net::Z3950::Responder. Also, as the library
insists on handling the PID file on its own, it wont' work to handle the
responsability to start-stop-daemon. The only solution I found was
making the fiel be owned by the instance user.

1. Create a Koha instance:
   $ koha-create --create-db test
2. Initiate all the things
3. Enable and start the z3950 responder
   $ koha-z3950-responder --enable test
   $ koha-z3950-responder --start test
4. Try doing some search:
   $ yaz-client localhost:2100
=> FAIL: you get:
Connecting...OK.
Sent initrequest.
Target closed connection
Z> quit
See you later, alligator.
=> FAIL: No warning or anything on the logs
5. Stop the daemon
   $ koha-z3950-responder --stop test
6. Run it manually:
   $ PERL5LIB=/usr/share/koha/lib KOHA_CONF=/etc/koha/sites/test/koha-conf.xml \
              /usr/bin/perl /usr/share/koha/bin/z3950_responder.pl \
              -c /etc/koha/sites/test/z3950 -u test-koha \
              -p /var/run/koha/test/z3950-responder.pid -d test-koha-z3950
7. Repeat the 4, on a separate terminal (no daemon mode this time)
=> FAIL: You get:
Cannot open /etc/koha/sites/test/log4perl.conf (Permission denied) at /usr/share/perl5/Log/Log4perl/Config/BaseConfigurator.pm line 51.
8. Change the file owner:
   $ chown test-koha /etc/koha/sites/test/log4perl.conf
9. Repeat 6, and 4
=> SUCCESS: It doesn't break anymore!
10. Apply this patch
11. Create a new instance, with the patched koha-create:
    $ debian/scripts/koha-create --create-db test1
12: Check the generated files permissions:
    $ ls -l /etc/koha/sites/test2
=> SUCCESS: You get:
-rw-r----- 1 root       test2-koha 19720 May 17 13:26 koha-conf.xml
-rw-r----- 1 test2-koha test2-koha  2825 May 17 13:26 log4perl.conf
-rw-r----- 1 root       test2-koha  2014 May 17 13:26 zebra-authorities-dom.cfg
-rw-r----- 1 root       test2-koha  2279 May 17 13:26 zebra-biblios-dom.cfg
-rw-r----- 1 root       test2-koha    26 May 17 13:26 zebra.passwd

13. Sign off :-D

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Ere Maijala <ere.maijala@helsinki.fi>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 79fe1a6ab9fe8720f1be3d3a7edb4162adae7ffe)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>