Zabbix

.......PS. [DEV-2695] changed fping tests to read address from file

Merge in ZBX/zabbix from feature/DEV-2695-6.5 to master

* commit '93fb5f1e0a07429d98852c0aa0d73ad996a0b1e2':
  .......PS. [DEV-2695] fixed signal blocking
  .......PS. [DEV-2695] added target hostname/ip validation in fping feature tests
  .......PS. [DEV-2695] added error messages when failed to prepare temporary file for fping tests
  .......PS. [DEV-2695] changed fping tests to read address from file