Project: datamanagement
Issue DM-1176: Make default image origin PARENT in all cases
After DM-840 is finished, and code updated for it (DM-846), make the new default image origin PARENT, remove the UNDEFINED image origin enum, and update at least some of the code that explicitly specifies PARENT (there is little harm in leaving this explicit, other than it does not set an optimal example).
Story points: 4