server-tools/base_import_module_group/security/res_groups.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo noupdate="1">
    <record model="res.groups" id="group_module_import">
        <field name="name">Allow importation of modules</field>
        <field name="users" eval="[(4, ref('base.user_root')), (4, ref('base.user_admin'))]"/>
    </record>
    <record model="res.groups" id="base.group_system">
        <field name="implied_ids" eval="[(4, ref('group_module_import'))]" />
    </record>
</odoo>