Zabbix

..F....... [ZBX-21000] fixed possibility to update host interface on items and item prototypes

Merge in ZBX/zabbix from feature/ZBX-21000-6.0 to release/6.0

* commit 'f17f824fbac57fb1474e16fb93f8b12585cb195e':
  ..F....... [ZBX-21000] fixed item prototype update if the type is HTTP agent
  ..F....... [ZBX-21000] removed redundant code
  ..F....... [ZBX-21000] fixed possibility to update host interface on item prototypes
  ..F....... [ZBX-21000] fixed possibility to update host interface on items from templates
  ..F....... [ZBX-21000] fixed possibility to update host interface on items from templates
  ..F....... [ZBX-21000] fixed possibility to update host interface on items from templates

(cherry picked from commit 0ff89482218985e4894e5b793aae88deaaa24683)