Zabbix

.......... [DEV-5040] added pixel color tolerance to screenshot comparison to ignore anti-aliasing noise in Selenium autotest

Merge in ZBX/zabbix from feature/DEV-5040-7.5 to master

* commit 'ca877c880923760a8651dd3b9f779673053e120d':
  .......... [DEV-5040] removed crisp edges screenshot workaround for map SVG elements
  .......... [DEV-5040] removed border radius screenshot workarounds obsoleted by comparison color tolerance
  .......... [DEV-5040] decreased screenshot comparison color tolerance from 7 to 4
  .......... [DEV-5040] added pixel color tolerance to screenshot comparison to ignore anti-aliasing noise