Create default properties under noupdate data tag

The default properties should be modifiable by the user.

issue5957
review26821002

configuration.xml

@@ -9,7 +9,8 @@ this repository contains the full copyright notices and license terms. -->
             <field name="inherit" ref="sale.sale_configuration_view_form"/>
             <field name="name">configuration_form</field>
         </record>
-
+    </data>
+    <data noupdate="1">
         <record model="ir.property" id="property_sale_opportunity_sequence">
             <field name="field"
                 search="[('model.model', '=', 'sale.configuration'), ('name', '=', 'sale_opportunity_sequence')]"/>