Disable the use of systemd for the initscripts
    
    389-ds-base uses service in a problematic way:
           service SCRIPT COMMAND [OPTIONS]
    The initscript use the optional [OPTIONS] as the name of the instance
    to operate on.  However, the systemd initscript wrapper in f15 does
    not interpret this correctly.  So for now, in f15, just disable the
    use of the systemd wrapper.