Add initial setup to configure root account email and password

See merge request !150388



Merged-by: Eduardo Sanz García <esanz-garcia@gitlab.com>
Approved-by: Thomas Hutterer <thutterer@gitlab.com>
Approved-by: Harsha Muralidhar <hmuralidhar@gitlab.com>
Approved-by: Smriti Garg <sgarg@gitlab.com>
Approved-by: Eduardo Sanz García <esanz-garcia@gitlab.com>
Reviewed-by: Imre Farkas <ifarkas@gitlab.com>
Reviewed-by: Thomas Hutterer <thutterer@gitlab.com>
Co-authored-by: agius <andrew@atevans.com>