Now that a test exists to enforce `__init__.py` in odoo module, we must
ensure that we keep the feature.
For that reason, a white-list system is added in `test_dunderinit` and a
test is added in order to be sure that a module without `__init__.py` can
be exists.
This this is made of a fake module `test_data_module` without
`__init__.py` and a test module which ensure the fake module was
installed.
closesodoo/odoo#66778
X-original-commit: 506755ef8ced187c0f5cd2fa600e7bb1e1fc0fe3
Related: odoo/enterprise#16653
Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>
