Adds filtering of hosts to DialContexts.

The provided DialContext wraps existing clients' DialContext in an attempt to
preserve any existing timeout configuration. In some cases, we may replace
infinite timeouts with golang defaults.

- scaleio: tcp connect/keepalive values changed from 0/15 to 30/30
- storageos: no change

pkg/controller/volume/persistentvolume/pv_controller_base.go

@@ -44,6 +44,7 @@ import (
 	"k8s.io/kubernetes/pkg/controller/volume/common"
 	"k8s.io/kubernetes/pkg/controller/volume/persistentvolume/metrics"
 	pvutil "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/util"
+	proxyutil "k8s.io/kubernetes/pkg/proxy/util"
 	"k8s.io/kubernetes/pkg/util/goroutinemap"
 	vol "k8s.io/kubernetes/pkg/volume"
 	"k8s.io/kubernetes/pkg/volume/csimigration"
@@ -70,6 +71,7 @@ type ControllerParameters struct {
 	NodeInformer              coreinformers.NodeInformer
 	EventRecorder             record.EventRecorder
 	EnableDynamicProvisioning bool
+	FilteredDialOptions       *proxyutil.FilteredDialOptions
 }
 
 // NewController creates a new PersistentVolume controller
@@ -142,6 +144,8 @@ func NewController(p ControllerParameters) (*PersistentVolumeController, error)
 	controller.translator = csiTranslator
 	controller.csiMigratedPluginManager = csimigration.NewPluginManager(csiTranslator)
 
+	controller.filteredDialOptions = p.FilteredDialOptions
+
 	return controller, nil
 }