Gpon zte c300/c320

Here my test code file over root of librenms install, don’t want to PR, cause ugly and snmp problems on devices

But ZTE C320 has very slow CPU and VERY SLOW AND BUGGY snmp replies… So i disappointed in these devices…

This can work normaly on small count of ONT/ONU on OLT…
Device needs SNMP data caching on firmware level,or may be spike-nails in PHP code, to to align received or non-received data)