Collection of firewall filter counters and policers

[bjornryden]

So this is my second go at Go, so please still bear with me and any pointers will be much appreciated.

Based off a copy of the routes package, as this was doing much the same as what I needed, albeit in a different directive.

This gets statistics (packets and bytes) from firewall filter (counters and policers), with labels for the filter and counter name, as well as if the type is counter or policer.

It's been tested to work with interface-specific filters too where interface becomes part of the counter/policer name

[czerwonk]

Hi, thank you very much. I will try to have a look at it this week.