Zabbix

A.F....... [ZBXNEXT-9595] allowed use of not formally valid JSON or XML in HTTP Agent request body

* commit '512c06780a2ba1d1b63c27749f51b6c22380f794':
  .......... [ZBXNEXT-9595] reverted item keys
  .......... [ZBXNEXT-9595] added create and update scenarios with invalid JSON and XML body
  .......... [ZBXNEXT-9595] removed JSON and XML body validation check
  .......... [ZBXNEXT-9595] removed XML and JSON related validation tests
  .......... [ZBXNEXT-9595] improved code style
  A......... [ZBXNEXT-9595] improved code style; updated change-log entry
  A.F....... [ZBXNEXT-9595] relaxed HTTP Agent posts parameter validation; removed support for API_JSON and API_XML validation type