test-runner: Fix verbose check for processes in namespaces

Check whether verbose output is enabled for process name arg[0] before
prepending the "ip netns exec" part to arg since arg[0] is going to be
"ip" after that.

tools/test-runner

@@ -176,12 +176,12 @@ class Process(subprocess.Popen):
 			global config
 			self.ctx = config.ctx
 
-		if namespace:
-			args = ['ip', 'netns', 'exec', namespace] + args
-
 		if self.ctx.is_verbose(args[0], log=False):
 			self.verbose = True
 
+		if namespace:
+			args = ['ip', 'netns', 'exec', namespace] + args
+
 		if outfile:
 			self._append_outfile(outfile)