partner-contact/base_location_geonames_import/data/res_country_data.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="base.es" model="res.country">
        <field name="geonames_state_code_column" eval="6" />
        <field name="geonames_state_name_column" eval="5" />
    </record>
    <record id="base.it" model="res.country">
        <field name="geonames_state_code_column" eval="6" />
        <field name="geonames_state_name_column" eval="5" />
    </record>
</odoo>