subid: subid-match: display the owner's ID not DN
    
    Previously, the subid-match command would output the full
    DN of the owner of the matched range.
    With this change, the UID of the owner is displayed, just like
    for other subid- commands.
    
    Fixes: https://github.com/freeipa/freeipa/pull/6001
    Signed-off-by: François Cami <fcami@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>