Zabbix

A.F....PS. [ZBXNEXT-1527] implemented support for cascaded (nested) low-level discovery workflows

Merge in ZBX/zabbix from feature/ZBXNEXT-1527-7.3 to master

* commit '8a4f1c53c41740f9889d10cd34d95ec26077f80b': (309 commits)
  ........S. [ZBXNEXT-1527] fixed order of includes
  .......... [ZBXNEXT-1527] added change-log entry
  .......... [ZBXNEXT-1527] small int test fix
  .......... [ZBXNEXT-1527] fixed unstableintegration test
  ........S. [ZBXNEXT-1527] removed redundant include
  ..F....... [ZBXNEXT-1527] removed extra permission checks while getting the prototype source; fixed unnecessary confirmation on the trigger form
  .......... [ZBXNEXT-1527] fixed integration test
  A......... [ZBXNEXT-1527] fixed exclusion of items during trigger prototype expression checks
  A......... [ZBXNEXT-1527] added validation for limitSelects to LLD rule prototypes
  A......... [ZBXNEXT-1527] added support for limitSelects to selectDiscoveryRulePrototypes query
  ..F....... [ZBXNEXT-1527] fixed getting inherited tags for discovered items, triggers and their prototypes; improved code style
  .......... [ZBXNEXT-1527] integration test
  .......... [ZBXNEXT-1527] fixed deprecated parameter in integration test; improved code style
  ........S. [ZBXNEXT-1527] lowered logleevl to trace for LLD macro substitution failures since it's normal when discovering nested lld prototypes
  ........S. [ZBXNEXT-1527] fixed invalid tablename when loggin lld_override audit details
  ........S. [ZBXNEXT-1527] renamed lldruleid to ruleid in  prototype auditlog details
  ..F....... [ZBXNEXT-1527] improved code style
  ........S. [ZBXNEXT-1527] fixed auditlog details for host prototypes
  ........S. [ZBXNEXT-1527] fixed audit log details when discovery rules/prototypes are created through template linking
  ........S. [ZBXNEXT-1527] fixed auditlog details for the override itself and also optags/optemplates
  ...