Zabbix

A......... [ZBX-18181] fixed undefined index when importing host with non-existing interface and host interfaces not being deleted if interfaces are not present in import file

* commit 'c6a42cc80c2d6ace8d52b1a0e94af51a4926c340':
  ..F....... [ZBX-18181] fixed coding style
  A......... [ZBX-18181] fixed validation of interface references in discovery rules and item prototypes and removed suspicious code
  .......... [ZBX-18181] updated changelog entry
  A......... [ZBX-18181] fixed host interfaces not being deleted if interfaces are not present in import file
  ..F....... [ZBX-18181] fixed undefined index and fatal error when importing host with non-existing interface from older version (Ivo)