[FIX] mrp: force empty domain to reset action at upgrade

There was a domain in 7.0 but it must be forced
to empty during upgrade, as the MRP BoM model
has changed.

addons/mrp/mrp_view.xml

@@ -459,6 +459,7 @@
             <field name="name">Bill of Materials</field>
             <field name="type">ir.actions.act_window</field>
             <field name="res_model">mrp.bom</field>
+            <field name="domain">[]</field> <!-- force empty -->
             <field name="view_type">form</field>
             <field name="search_view_id" ref="view_mrp_bom_filter"/>
             <field name="help" type="html">