feeds.conf.default: switch LuCI feed to nbd.name git mirror

SVN-Revision: 36124

feeds.conf.default

 src-svn packages svn://svn.openwrt.org/openwrt/packages
 src-svn xwrt http://x-wrt.googlecode.com/svn/trunk/package
-src-svn luci http://svn.luci.subsignal.org/luci/trunk/contrib/package
+src-git luci git://nbd.name/luci.git
 #src-svn phone svn://svn.openwrt.org/openwrt/feeds/phone
 #src-svn efl svn://svn.openwrt.org/openwrt/feeds/efl
 #src-svn xorg svn://svn.openwrt.org/openwrt/feeds/xorg