When retrieving metrics from a Prometheus endpoint. for instance, from a GitLab metrics endpoint,t we get the following error 

Size of the response received from Zabbix server "my-zabbix-server.lan" exceeds the allowed size of 16777216 bytes. This value can be increased in the ZBX_SOCKET_BYTES_LIMIT constant in include/defines.inc.php.

Steps to reproduce:

1. Monitor a gitlab server and add the GitLab by HTTP

1. Open the item 'GitLab: Get instance metrics'
2. Click on 'Test'
3. click on 'Get Value and test'

Result:

I've tried to find a way to reduce the metrics answer without any luck

Would it be possible to add the socket response size as a parameter in the Zabbix config and not have it as constant?