- The installation of patterns and products in SLE12 requires
  the use of zypper for SLE12. That's because the repository
  metadata has changed with regards to the product definition
  and in addition patterns are now provided as extra packages.
  In order to stay compatible the suse-SLE12-JeOS template
  adds the installation of the base pattern and the SLES
  product by installing the appropriate packages and includes
  a comment describing that the definition of <product> and
  <namedCollection> only works if the build host uses the
  SLE12 zypper