#60 resolution: added container awareness to prevent "supervise/ok" bloc...

If you run runit cookbook under docker container it will stuck. runit provider will fall into infinitive loop waiting for spuervise/ok (which will never happen for docker). While OHAI is not container aware yet, current PR adds checks if cookbook convergence happen inside container and skips supervise/ok wait.

Should work for different types of containers not only for docker where it was tested