Generate scripts from templates
    
    Python scripts are now generated from templates. The scripts are marked
    as nodist (no distribution) but install targets. The templates for the
    scripts are extra distribution data, no installation (noinst).
    
    Fixes: https://pagure.io/freeipa/issue/7680
    Signed-off-by: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>