kubelet: avoid deprecation remark for traditional logging flags

Just because the options can now also be set via a configuration file does not
mean that the command line flags should not be used anymore.

cmd/kubelet/app/options/options.go

@@ -391,7 +391,20 @@ func AddKubeletConfigFlags(mainfs *pflag.FlagSet, c *kubeletconfig.KubeletConfig
 		// e.g. if a flag was added after this deprecation function, it may not be at the end
 		// of its lifetime yet, even if the rest are.
 		deprecated := "This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information."
+		// Some flags are permanently (?) meant to be available. In
+		// Kubernetes 1.23, the following options were added to
+		// LoggingConfiguration (long-term goal, more complete
+		// configuration file) but deprecating the flags seemed
+		// premature.
+		notDeprecated := map[string]bool{
+			"v":                   true,
+			"vmodule":             true,
+			"log-flush-frequency": true,
+		}
 		fs.VisitAll(func(f *pflag.Flag) {
+			if notDeprecated[f.Name] {
+				return
+			}
 			f.Deprecated = deprecated
 		})
 		mainfs.AddFlagSet(fs)