fix(core) Fix create_missing_trees to be able to snapshot in...

 fix(core) Fix create_missing_trees to be able to snapshot in locality, amond other things

Changed code so that common department classes are hardcoded to speed up
 process and avoid weird classes like residentialPerson instead of
 locality.
Also fixed code so that MUST attributes from all classes of the
 hierarchy are filled whether autodetection is used or not.

issue #5861