Zabbix

.......... [DEV-4240] added code to skip Selenium tests if DB is broken

* commit '4519fe08f3f6c0253fa97280ae68dc634a833aba':
  .......... [DEV-4240] changed command of exec(), from rd to del
  .......... [DEV-4240] added removeDumpFile function
  .......... [DEV-4240] added code to skip Selenium tests if DB is broken

(cherry picked from commit 419e92129976233c65d9fdefe8a998c904ebb78a)