Zabbix

.........T [ZBXNEXT-6671] added templates DELL PowerEdge R720 SNMP, R720 by HTTP, R740 SNMP, R740 by HTTP, R820 SNMP, R820 by HTTP, R840 SNMP, R840 by HTTP

Merge in ZBX/zabbix from feature/ZBXNEXT-6671-5.5 to master

* commit '07f84fe225cb675c094420e9e49d7a2f9d19042a':
  .........T [ZBXNEXT-6671] changed URL in Network interface discovery rule
  .........T [ZBXNEXT-6671] changed names of HttpRequest methods
  .........T [ZBXNEXT-6671] added templates DELL PowerEdge R720 SNMP, R720 by HTTP, R740 SNMP, R740 by HTTP, R820 SNMP, R820 by HTTP, R840 SNMP, R840 by HTTP