make kube-proxy.log less verbose.

pkg/util/iptables/iptables.go

@@ -183,7 +183,7 @@ func (runner *runner) run(op operation, args []string) ([]byte, error) {
 	iptablesCmd := runner.iptablesCommand()
 
 	fullArgs := append([]string{string(op)}, args...)
-	glog.V(1).Infof("running iptables %s %v", string(op), args)
+	glog.V(4).Infof("running iptables %s %v", string(op), args)
 	return runner.exec.Command(iptablesCmd, fullArgs...).CombinedOutput()
 	// Don't log err here - callers might not think it is an error.
 }