Add support for JeOS

[stdevel]

In accordance with the official documentation it would be good to implement the following "hack" to replace the base product with SUSE Manager:

# rpm -e --nodeps sles-release
# vi /etc/zypp/zypp.conf
...
solver.onlyRequires = false

ESC ZZ
# SUSEConnect -p SUSE-Manager-Server/4.0/x86_64 -r <code> -e <mail>
# SUSEConnect -p sle-module-basesystem/15.1/x86_64
# SUSEConnect -p sle-module-python2/15.1/x86_64
# SUSEConnect -p sle-module-server-applications/15.1/x86_64
# SUSEConnect -p sle-module-web-scripting/15.1/x86_64
# SUSEConnect -p sle-module-suse-manager-server/<productnumber>/x86_64
# ln -s /etc/products.d/SUSE-Manager-Server.prod /etc/products.d/baseproduct
# zypper in yast2-storage-ng

[stdevel]

Investigating in branch feat-jeos-20

[stdevel]

Fixed in commit cede07e.