Zabbix

........S. [ZBX-16725] fixed detection of fping minimal interval

* commit '6308e14af4e950d71182c280622f578b9bea375f':
  .D........ [ZBX-16725] added changelog entry
  ........S. [ZBX-16725] constant rename
  ........S. [ZBX-16725] remove redundant brackets
  ........S. [ZBX-16725] detection of fping minimal interval with error return in case of timeout