Ticket 13 - Add init function to create new domain entries
Bug Description: When we create a new backend, we were missing a
way to populate the entries for usage.
Fix Description: Add an initialise command to dsidm which is
capable of creating sample entries based on the version supplied
or defaulting to the highest available version.
https://pagure.io/lib389/issue/13
Author: wibrown
Review by: spichugi (Thanks!)