Zabbix

.........T [ZBX-21582] optimized HPE Synergy template to spread load across preprocessing workers

Merge in ZBX/zabbix from feature/ZBX-21582-6.3 to master

* commit 'f6b7eee01d5b662bc93ddd9014e78b2dd0e508c9':
  .........T [ZBX-21582] updated HPE synergy template documentation
  .........T [ZBX-21582] fixed preprocessing and item key in HPE Synergy template
  .........T [ZBX-21582] fixed changelog file
  .........T [ZBX-21582] optimized HPE Synergy template to spread the load across preprocessing workers