feeds.conf.default: restore the old package feed temporarily

As explained here:
https://forum.openwrt.org/viewtopic.php?id=51078

allow both the old and the new packages feed to co-exist for a grace
period of 3 weeks, allowing maintainers to move packages progressively.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 41149

feeds.conf.default

@@ -2,7 +2,7 @@ src-git packages https://github.com/openwrt/packages.git
 src-git luci http://git.openwrt.org/project/luci.git
 src-git routing https://github.com/openwrt-routing/packages.git
 src-git telephony http://git.openwrt.org/feed/telephony.git
-#src-git oldpackages http://git.openwrt.org/packages.git
+src-git oldpackages http://git.openwrt.org/packages.git
 #src-svn xwrt http://x-wrt.googlecode.com/svn/trunk/package
 #src-svn phone svn://svn.openwrt.org/openwrt/feeds/phone
 #src-svn efl svn://svn.openwrt.org/openwrt/feeds/efl