Feeback for icmp-exporter

[Clayton Singh]

Hi All,

I am the author of icmp-exporter. I was hoping to get some feedback on it before I submit a PR to add it to the docs.

> ICMP exporter for prometheus efficiently detects path issues by asynchronously sending pings to probe endpoints. Utilizing network cards hardware timestamping features to eliminate scheduling and kernel-related uncertainties, achieving precision to the nearest microsecond. 

Despite the name, icmp exporter also does tcp syn pings. I never really expected to add that functionality when it was first being developed. 

What I am looking for:

• Feedback on metric names
• Any improvements that are needed to best fit https://prometheus.io/docs/instrumenting/exporters/
• Hardware validation on various network cards
• General user testing and feedback

Thanks for your time,
~ Clayton Singh