Zabbix

A......... [ZBX-19597] fixed error when value maps API allow to create invalid value mapping of type regexp

* commit '81dbb9aa79fdb0ed0e8a3b07087aee872bdc49fc':
  .......... [ZBX-19597] fixed value for regex test cases, "\\ug" part working differently on local php and jenkins
  A......... [ZBX-19597] fixed API_REGEX behavior when option API_ALLOW_GLOBAL_REGEX is not set
  .......... [ZBX-19597] added unit tests
  A......... [ZBX-19597] fixed PHPDoc for validateRegex() function
  A......... [ZBX-19597] fixed issue when value maps API allow to create invalid value mapping of type regexp