Ability to Initialize counters with 0

[Antiarchitect]

Hi, I know so far gauge type has set method while counters have only increment and decrement so there is no ability to initialize counters with 0. We differ 0 and no-data state and count no-data as a pathological state. We use https://github.com/asusikov/yabeda-statsd plugin. It would be nice to have the ability to initialize counters with 0 independently of the adapter if possible.

[Antiarchitect]

@Envek