conf: use mirror for fedora packages download

conf/qubes-x86_64.conf

@@ -18,8 +18,8 @@ failovermethod=priority
 
 [fedora]
 name=Fedora 13 - x86_64
-baseurl=http://download.fedoraproject.org/pub/fedora/linux/releases/13/Everything/x86_64/os/
+#baseurl=http://download.fedoraproject.org/pub/fedora/linux/releases/13/Everything/x86_64/os/
-#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-13&arch=x86_64
+mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-13&arch=x86_64
 enabled=1
 gpgcheck=1
 gpgkey=file:///tmp/qubes-installer/keys/fedora-13.asc