Zabbix

.......... [DEV-1749] fixed SSO authentication autotest to stabilize on postgresql

Merge in ZBX/zabbix from feature/DEV-1749-5.2 to release/5.2

* commit '26984d4818547a4d04747fd2f3de14bc189c5d20':
  .......... [DEV-1749] changed method description
  .......... [DEV-1749] removed duplicate code in constructor method
  .......... [DEV-1749] changed tests order due to bug ZBX-18525
  .......... [DEV-1749] added methods connect and reset for web driver initialization
  .......... [DEV-1749] added page close after authentication check