mw/kubernetes: remove kService and kPod

Remove the intermediate step of gathering everyhing in a kPod and
kService and extracting the msg.Service from there. Now findPods and
findServices return []msg.Service.

This cuts down on the code and also removed the double looping of
finding the data we need, so it should be faster.

middleware/kubernetes/federation.go

@@ -30,7 +30,7 @@ func (k *Kubernetes) Federations(state request.Request, fname, fzone string) (ms
 	if err != nil {
 		return msg.Service{}, err
 	}
-	r, err := k.parseRequest(state)
+	r, err := parseRequest(state)
 
 	lz := node.Labels[LabelZone]
 	lr := node.Labels[LabelRegion]