Support for Bintec RS353A

Tags: #<Tag:0x00007fdef73fa060> #<Tag:0x00007fdef73f9f98>

The bintec RS120 is supposed to be supported, but the RS353A is not working as it should, I added the OID and nobulk:true to the bintec yaml to make it sort of work, but the ports keep disappearing

Discovery: https://p.libren.ms/view/828c9bd0
Poller: https://p.libren.ms/view/a39519a2

SNMPwalk: https://p.libren.ms/view/91058e57 (device is v2, but snmpbulkwalk wouldn’t work?)

The MIB is available here: https://www.bintec-elmeg.com/fileadmin/user_upload/Downloads/55/mib-10203.zip