Zabbix

...G...... [ZBX-16803] fixed ability to use Interface Guid in network interface LLD

Merge in ZBX/zabbix from feature/ZBX-16803-5.0 to release/5.0

* commit '24d6794ab8ab5db8683875979cff6cefdcaeb11e':
  ...G...... [ZBX-16803] fixed GUID in capitaletters
  ...G...... [ZBX-16803] fixed win compilation
  ...G...... [ZBX-16803] reused existing json structure
  ...G...... [ZBX-16803] returned json IFGUID tag with empty value
  ...G...... [ZBX-16803] fixed typo
  ...G...... [ZBX-16803] fixed ability to use Interface Guid in network interface LLD