File _multibuild of Package SUSE-MicroOS

<multibuild>
        <!-- for release -->
        <flavor>Default</flavor>
        <flavor>Default-RT</flavor>
        <!-- for testing purposes only -->
<!--        <flavor>image-legacy</flavor> -->
        <flavor>Default-vdi-legacy</flavor>
        <flavor>Default-qcow</flavor>
</multibuild>