Zabbix

A.F.....S. [ZBXNEXT-7527] added support of host prototypes on discovered hosts

Merge in ZBX/zabbix from feature/ZBXNEXT-7527-7.3 to master

* commit '861bbb9e1e48e4854350ed90597e8db2d68b5297':
  A.F....... [ZBXNEXT-7527] removed redundant code
  ........S. [ZBXNEXT-7527] fixed removal of deeper host nesting
  ........S. [ZBXNEXT-7527] added warning logs when starting/ending host prototype update postinit task
  ....I...S. [ZBXNEXT-7527] moved prototype copying from upgrade patch to postinit task
  .......... [ZBXNEXT-7527] fixed memory leak
  .......... [ZBXNEXT-7527] removed host prototyope 'discover' field setting to 1 after copying discovered host prototypes, removed debug logging
  A.F....... [ZBXNEXT-7527] added support of host prototypes on discovered hosts
  ........S. [ZBXNEXT-7527] added support of host prototypes on discovered hosts
  ........S. [ZBXNEXT-7527] fixed nested discovered host removal