Don't delete overwrite.cli.url when the Nextcloud app's settings are
updated with no domain configured. Instead, set it to the default value
of http://localhost/nextcloud
We might want to consider updating existing, faulty setups.
Helps: #2433
Signed-off-by: Benedek Nagy <contact@nbenedek.me>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>