DataDog/dd-agent — pull request #989 by LotharSee (2014-06-20 18:03:23+00:00)
Title: Less Exception with Docker check

Aims at fixing #980 and #981

* Warning if no containers instead of exception
* Log if fail to open a cgroup file but keep going. If we fail to open them all, then raise the Docker 0.9/0.10 bug Exception.