I'd like to override the address layout defined in `Magento\Customer\etc\config.xml` -> `default | customer | address_templates | oneline | html`

In Magento 1, we could re-define a config.xml file in the local pool or in a module, and everything got mashed together and our new values over-rode it.

However, this doesn't seem to work in Magento 2, assuming from the documentation that `config.xml` only affects the scope of the module? So, I've tried adding:

`Vendor/Namespace/etc/config.xml` or `Vendor/Namespace/etc/frontend/config.xml` with the following content:

```
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Store:etc/config.xsd">
<default>
    <customer>
        <address_templates>
            <html><![CDATA[{{depend prefix}}{{var prefix}} {{/depend}}{{var firstname}} {{depend middlename}}{{var middlename}} {{/depend}}{{var lastname}}{{depend suffix}} {{var suffix}}{{/depend}}{{depend firstname}}<br/>{{/depend}}
                    {{depend company}}{{var company}}<br />{{/depend}}
                    {{if street1}}{{var street1}}<br />{{/if}}
                    {{depend street2}}{{var street2}}<br />{{/depend}}
                    {{depend street3}}{{var street3}}<br />{{/depend}}
                    {{depend street4}}{{var street4}}<br />{{/depend}}
                    {{if city}}{{var city}},  {{/if}}{{if region}}{{var region}}, {{/if}}{{if postcode}}{{var postcode}}{{/if}}<br/>
                    {{var country}}<br/>
                    {{depend telephone}}Telephone: {{var telephone}}{{/depend}}
                    {{depend fax}}<br/>F: {{var fax}}{{/depend}}
                    {{depend vat_id}}<br/>VAT: {{var vat_id}}{{/depend}}]]>
            </html>
        </address_templates>
    </customer>
</default>
</config>

```

However, I don't get the change (Telephone: instead of T: in this quick example).

**EDIT:** module.xml looks like this:

```
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
<module name="Vendor_Namespace" setup_version="0.1.0">
    <sequence>
        <module name="Magento_Customer"/>
    </sequence>
</module>

```

Do I need to create my own renderer for this and add a preference to use it, or am I missing something?