Zabbix

.......... [DEV-2376] fixed integration test for history function changecount

* commit '6b30f7a9128abcb6a8db61c86dd6c4408f8c4d70':
  .......... [DEV-2376] improved performance of sending trapper values
  .......... [DEV-2376] added missing require_once
  .......... [DEV-2376] enabled testFunctionChangeCount execution and fixed warning