Zabbix

...G...... [ZBXNEXT-5646] added support of configuration parameters HostInterface and HostInterfaceItem

* commit '836b1d0c1b07b0fdbab71664b17ed04a940cacde':
  .......... [ZBXNEXT-5646] minor code simplification
  ...G...... [ZBXNEXT-5646] reverted const value scope
  ...G...... [ZBXNEXT-5646] fixed configuration file checks
  .......... [ZBXNEXT-5646] added HostInterface,HostInterfaceItem parameters to default conf files
  ...G...... [ZBXNEXT-5646] improved error messages; fixed fatal error message handling
  ...G...... [ZBXNEXT-5646] added check to avoid duplicate log entries
  ...G...... [ZBXNEXT-5646] added missing log entries
  ...G...... [ZBXNEXT-5646] minor style fix
  ...G...... [ZBXNEXT-5646] added PID to error on exit
  ...G...... [ZBXNEXT-5646] separated configuration file processing; improved exit with error
  ...G...... [ZBXNEXT-5646] added support of configuration parameters HostInterface and HostInterfaceItem

(cherry picked from commit da91e477b602bb93fd88a7ae4891fd403a63d3a4)