File _multibuild of Package openSUSE-MicroOS-build

<multibuild>
        <flavor>kvm-and-xen</flavor>
        <flavor>SelfInstall</flavor>
        <flavor>kvm-and-xen-sdboot</flavor>
        <flavor>VMware</flavor>
        <flavor>kvm-and-xen-grub-bls</flavor>
</multibuild>