File _multibuild of Package skelcd-fallbackrepo

<multibuild>
  <package>openSUSE</package>
  <package>Kubic</package>
  <package>SLES</package>
  <package>SLED</package>
  <package>SLES_SAP</package>
  <package>SLE_HPC</package>
  <package>SLE_RT</package>
  <package>CAASP</package>
</multibuild>