ListContainer filter

@smarterclayton problem is that our fork does not contain log changes I introduced in https://github.com/GoogleCloudPlatform/kubernetes/pull/1318 aren't in our k8s fork, so I had to resolve the conflicts against the version we have now.
So there will need to be additional changes if yo want to puts it into origin.

@jhadvig @smarterclayton maybe I'm missing something here, but why we can't just pass `ListContainers` as a parameter, so the caller of this func can specify the filter he want to use....

If we want to be explicit, I will rename this `getAllKubeletDockerContainers` or something similar.