Configuration through the admin center generates incorrect nuxeo.templates in some cases

Steps to reproduce:

• Edit manually the templates in $NUXEO/bin/nuxeo.conf to add https to a PostgreSQL+DAM configuration. The corresponding line becomes:

  nuxeo.templates=postgresql,dam,https

• Start Nuxeo
• Go to the configuration screen in Admin Center
• Edit some properties about notification for instance (prefix subject)
• Save the parameters and restart
  => it will never start

If you start to restart, you got an error because the templates parameter is incorrectly set with:

nuxeo.templates=postgresql,damhttps

In the configuration screen, there is two fields listing the templates, one correctly nuxeo.templates, one incorrectly nuxeo.nodbtemplates

See screenshot attached to this ticket

Maybe the problem is related to the detection of the database configuration from the previous nuxeo.templates property