Discovery facts are short-lived - they are discarded during provisioning
and they were primarily only meant for discovery rules.

We know it is quite limiting and we were not thinking about pulling 
those facts to production stage during the initial design. It turned out 
as a useful feature, therefore we are currently changing the way we
store discovered facts and we want to keep them separate from "normal"
facts.

Workaround for Satellite 6.1-6.2 - all facts that start with discovery_ 
survives the provisioning *until* the initial facter run (which 
overwrites everything with it's own set of facts). So you can use these
only during provisioning (e.g. in kickstart template or finish 
template). A workaround for this workaround would be to store these 
facts on the provisioned system as custom facts, which are then reported
by facter in production mode every 30 minutes. Sounds complicated, but 
that's how discovery custom facts work today.