Change informer to watch for modified kube deployment/pod files

[ericmcbride]

We need to update the informer to see if a label or such has been added or modified during an edit, so we can pull it into the log streaming pool if theres a --selector argument.
1.) In the match statement under modified, see what we can key off of if a deployment/pod hais edited
2.) look up the pod that was edited, see if label matched what --selector key/value pair was passed in, if it was add to pool.