Zabbix

.......... [DEV-1269] updated Host availability widget autotest to handle interface type filtering

* commit '925c6556118bcb10661caba799fd16091d6b7987':
  .......... [DEV-1269] minor coding style fix
  .......... [DEV-1269] updated scenario as per review comments and moved widget deletion logic to CDashboardElement
  .......... [DEV-1269] small fixes and changed variable names
  .......... [DEV-1269] updated autotest according to review comments
  .......... [DEV-1269] changed index function for CTableElement and simplified 'Host availability' test
  .......... [DEV-1269] updated test to be able to handle scenarios with multiple interfaces in HA widget