Issue 50071 - Set ports in local_simple_allocate function
    
    Description: remove_ds_instance function require DirSrv
    object having port and sslport defined for semanage remove
    label operation. We should set it in local_simple_allocate too.
    Fix DSEldif.get function so it returns a list instead of a view
    (Python 3 change).
    
    https://pagure.io/389-ds-base/issue/50071
    
    Reviewed by: mhonek, tbordaz, cheimes (Thanks!)