Fix YouTube on HTTP/2

Author: 张国晔

code/default/gae_proxy/local/proxy.ini

@@ -50,7 +50,7 @@ talkx.l.google.com = direct
 .appspot.com = direct
 ;.gvt1.com = direct
 ;.android.com = direct
-.youtube.com = direct
+;.youtube.com = direct
 ;.ggpht.com = direct
 ;.2mdn.net = direct
 ;.googlesyndication.com = direct