Add ability to enable SO_REUSEPORT

[loganmc10]

Would it be possible to enable the use of SO_REUSEPORT when listening for SNMP traps?

I run a single-node Kubernetes cluster. I'd like to run multiple copies of Telegraf, each listening for traps, but they all listen on port 162.

This will allow me to run multiple replicas on the same node so that I can do rolling updates.

[loganmc10]

I did find this implementation, but I don't really know Go, so I can't say whether it's good or not:

sleepinggenius2@ae781f4

[TimRots]

Hi @loganmc10 , seems like a nice feature. Will take a shot at implementing this