ContactRocket/roles/odoo/files/addons/odoo-product-configurator/product_configurator/data/product_attribute.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>

        <record id="custom_attribute" model="product.attribute">
            <field name="name">Custom</field>
            <field name="active" eval="False"/>
        </record>

        <record id="custom_attribute_value" model="product.attribute.value">
            <field name="name">Custom</field>
            <field name="attribute_id" ref="custom_attribute"/>
            <field name="active" eval="True"/>
        </record>

    </data>
</openerp>