As [postgresql 15] changed the permissions of the public schema, when testing the rpm package with Fedora 38, the test fails with `InsufficientPrivilege: permission denied for schema public`. With this commit, we properly create the database with the odoo user. While at it, let's do the same with the poor left behind tgz package. [postgresql 15]: https://www.postgresql.org/docs/release/15.0/ Part-of: odoo/odoo#139482