Plugin Support

.......... [ZBX-22373] added mixing session and key parameter for Zabbix agent 2 items

* commit '5419212626f73f50f300a90f08d650001d8a28f4':
  .......... [ZBX-22373] updated change log
  .......... [ZBX-22373] code clean-up
  .......... [ZBX-22373] allow mixing session and key parameter for Zabbix agent 2 items