Zabbix

.......... [DEV-4614] moved monitoring overview data from data_test.sql to related test classes

* commit '9561976012c35e479f2d428bc695ab31ecd13420':
  .......... [DEV-4614] added missing data sources to tests and corrected type-o in comment
  .......... [DEV-4614] fixed typo; reverted changes related to unix timestamp
  .......... [DEV-4614] fixed coding style
  .......... [DEV-4614] added fixes regarding code review
  .......... [DEV-4614] fixed coding style
  .......... [DEV-4614] fixed affected tests (master)
  .......... [DEV-4614] fixed affected tests (master)
  .......... [DEV-4614] updated data sources; fixed affected tests
  .......... [DEV-4614] added data source with host groups, hosts and items
  .......... [DEV-4614] updated CopyWidgetsDashboards data source ids (master)
  .......... [DEV-4614] removed related data from data_test.sql (master)
  .......... [DEV-4614] removed related data from data_test.sql (master)
  .......... [DEV-4614] removed related data from data_test.sql (master)
  .......... [DEV-4614] removed data from data_test.sql (master)