[10.0] csv2xml: When I am trying to update a xml file the __openerp__.py is not detected.

## Affected versions:

Odoo 10.0

## Steps to reproduce:

- Run the script csv2xml with a module with `__openerp__.py` file

## Expected Behavior:

``` shell
.
.
.
 --- The script successfully finish.
```

## Current Behavior:

``` shell
The given module is not a openerp module. Missing  __openerp__.py or __manifest__.py file.
```
