Add -t (timestamps) and -V (virtual controlnetroutes) to vnode setup

call.

tbsetup/libreboot.pm.in

@@ -843,12 +843,13 @@ sub RebootVNode($$) {
 	exit(GeniEmulab->StartSlivers($experiment, [ $nodeobj ]));
     }
 
-    my $addargs = "";
+    my $addargs = "-t ";	# Turn on timestamps.
     if ($plab) {
 	$addargs .= "-p ";
     }
     elsif ($jailed) {
-	$addargs .= "-j ";
+	# Use virtual control net routes. 
+	$addargs .= "-jV ";
     }
     else {
 	$addargs .= "-i ";