Unify display of principal names/aliases across entities
Since now users, hosts, and service all support assigning multiple principal
aliases to them, the display of kerberos principal names should be consistent
across all these objects. Principal aliases and canonical names will now be
displayed in all add, mod, show, and find operations.
Reviewed-By: David Kupka <firstname.lastname@example.org>
Reviewed-By: Jan Cholasta <email@example.com>