zabbix_agentd: Fix agent modules dir and few minor bugs

- Add agent modules-dir to backup
- Remove original, not used agent modules dir from rootfile
- Create modules-dir during install if it not already exists
- bugfix: Add existence check before creating log-dir, avoiding error
             messages if it already exists from a previous install
- bugfix: add extract_backup_includes to update.sh script to make
              sure backup includes exist when backup is taken.

Signed-off-by: Robin Roevens <robin.roevens@disroot.org>

src/paks/zabbix_agentd/install.sh

@@ -39,8 +39,8 @@ ln -sf ../init.d/zabbix_agentd /etc/rc.d/rc0.d/K02zabbix_agentd
 ln -sf ../init.d/zabbix_agentd /etc/rc.d/rc6.d/K02zabbix_agentd
 
 # Create additonal directories and set permissions
-mkdir -pv /var/log/zabbix
-chown zabbix.zabbix /var/log/zabbix
+[ -d /var/log/zabbix ] || ( mkdir -pv /var/log/zabbix && chown zabbix.zabbix /var/log/zabbix )
+[ -d /usr/lib/zabbix ] || ( mkdir -pv /usr/lib/zabbix && chown zabbix.zabbix /usr/lib/zabbix )
 
 restore_backup ${NAME}
 start_service --background ${NAME}

src/paks/zabbix_agentd/update.sh

@@ -22,6 +22,7 @@
 ############################################################################
 #
 . /opt/pakfire/lib/functions.sh
+extract_backup_includes
 ./uninstall.sh
 ./install.sh