Update the deprecated DeleteLocalData

DeleteLocalData was deprecated for users of kubectl in 0.20 [1].
At the same time of the deprecation, the relevant code was also
removed [2] without warning: The DeleteLocalData from the helper
structure was simply renamed DeleteEmptyDirData, without shims
on the exposed pkg.

This is a problem, as it completely breaks kured.

This should fix it, by using the new field name.

[1]:
https://github.com/kubernetes/kubectl/commit/56ea9621b7fc333d2d2dde8ae39c15cacf28dbf7
[2]:
https://github.com/kubernetes/kubectl/commit/56ea9621b7fc333d2d2dde8ae39c15cacf28dbf7#diff-041bdcdedca650a38a8d82cf15ab6f3665b7b84a0fb44a8bb5dcdc5cd944c63d

cmd/kured/main.go

@@ -272,7 +272,7 @@ func drain(client *kubernetes.Clientset, node *v1.Node) {
 		Client:              client,
 		GracePeriodSeconds:  -1,
 		Force:               true,
-		DeleteLocalData:     true,
+		DeleteEmptyDirData:  true,
 		IgnoreAllDaemonSets: true,
 		ErrOut:              os.Stderr,
 		Out:                 os.Stdout,