- follow buildout-2.12.cfg change to have extends cache prefilled

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@42448 20353a03-c40f-0410-a6d1-a30d3c3de9de

buildout/buildout.cfg

 [buildout]
-extends = profiles/official.cfg
+# Note: profiles/development.cfg is added only to fill extends cache
+#       for instances
+extends =
+  profiles/development.cfg
+  profiles/official.cfg
 unzip = true