They are useful only with RHN, which Red Hat discontinued many years
ago, and with Spacewalk 5, which is EOL for more than 3 years;
while they could be potentially used with Uyuni / SUSE Manager (fork of
Spacewalk 5), we have not heard about anyone using it in those setups.
Hence, deprecate these two modules, with their removal planned for
10.0.0 in case there are no reports about being still useful, and
potentially noone that steps up to maintain them.
