Use networking to hold network related pkgs

Change names of unclear methods

Use net as pkg name for short

pkg/master/controller.go

@@ -21,6 +21,7 @@ import (
 	"net"
 	"time"
 
+	"github.com/golang/glog"
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/endpoints"
 	"k8s.io/kubernetes/pkg/api/errors"
@@ -32,8 +33,7 @@ import (
 	portallocatorcontroller "k8s.io/kubernetes/pkg/registry/service/portallocator/controller"
 	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/util/intstr"
-
-	"github.com/golang/glog"
+	utilnet "k8s.io/kubernetes/pkg/util/net"
 )
 
 // Controller is the controller manager for the core bootstrap Kubernetes controller
@@ -51,7 +51,7 @@ type Controller struct {
 
 	ServiceNodePortRegistry service.RangeRegistry
 	ServiceNodePortInterval time.Duration
-	ServiceNodePortRange    util.PortRange
+	ServiceNodePortRange    utilnet.PortRange
 
 	EndpointRegistry endpoint.Registry
 	EndpointInterval time.Duration