Bug 19610: Make koha-common.logrotate use copytruncate

This patch makes logrotate use the **copytruncate** directive, removing
the need to stop the Zebra and Plack servers on log rotation.

To test:
- Run:
  $ misc4dev/cp_debian_files.pl
- Edit the new /etc/logrotate.d/koha-common file changing 'weekly' for
'hourly'. This is to ease testing.
- Run:
  $ sudo ls -l /var/log/koha/kohadev
- Open a second terminal on your kohadevbox. On it...
- Run:
  $ sudo logrotate /etc/logrotate.d/koha-common
- Run:
  $ sudo ls -l /var/log/koha/kohadev
=> SUCCESS: Files got rotated! (i.e. files ending in .1 are created, the
        sizes make sense (.1 have contents, the ones without numbering
            probably zeroed <- it will depend on what's happening with
            your devbox in between).
- Play with your Koha, do some searches too:
=> SUCCESS: You have access to your Koha, searches work. i.e.:
     - Apache handled the log rotation operation
     - Plack handled the log rotation operation
     - Zebra handled the log rotation operation
- 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>

debian/koha-common.logrotate

@@ -4,17 +4,12 @@
     rotate 5
     weekly
     missingok
+    copytruncate
     compress
     delaycompress
     notifempty
     sharedscripts
-    prerotate
-        /usr/sbin/koha-zebra --stop $(koha-list --enabled) > /dev/null
-        /usr/sbin/koha-plack --stop --quiet $(koha-list --enabled --plack) > /dev/null
-    endscript
     postrotate
         /etc/init.d/apache2 reload > /dev/null
-        /usr/sbin/koha-plack --start --quiet $(koha-list --enabled --plack) > /dev/null
-        /usr/sbin/koha-zebra --start $(koha-list --enabled) > /dev/null
     endscript
 }