Added commands:
* user-add-manager
* user-remove-manager
* stageuser-add-manager
* stageuser-remove-manager
Commit contains override of convert_attribute_members method in baseuser
class that ensures the managers will be returned in 'manager' attribute
due to backward compatibility instead of 'manager_user' as would be
expected.
https://fedorahosted.org/freeipa/ticket/5344
This patch also fixes: https://fedorahosted.org/freeipa/ticket/5387
Reviewed-By: David Kupka <dkupka@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>