New check plugin to detect use of SNMPv1 and SNMPv2

[ericwb]

Is your feature request related to a problem? Please describe.
SNMPv1 and SNMPv2 are known to be non-secure protocols. SNMPv3 can be secure if used properly with encryption and authentication. But correct options must be chosen.

https://www.us-cert.gov/ncas/alerts/TA17-156A

Describe the solution you'd like
New check plugin to detect use of pysnmp (Python SNMP library) and use with SNMP version 1, 2, and 3 (with no auth, no priv).

Describe alternatives you've considered
N/A

Additional context
N/A

[Jed-Giblin]

I would love to work on this.