unix196

I confirm, we also have many messages, like ``` oct 14 08:14:53 asrv241 collectd[27662]: docker : Unexpected number of blkio stats for container 86bb404/brubeck! oct 14 08:14:53 asrv241 collectd[27662]: docker...

Also faced with the fact that the plugin generates metrics not as expected. I read this issue and I think, that it's very important: everyone usually expects metrics like that...