Enable puppet facts

Currently facter facts omit facts that a distributed via Puppet. This
commit adds the `--puppet` option.

In cases where puppet is not installed, the command sends a warning to
STDERR *but* completes successfully. So should not cause any issues.

The benefit is, filtering can be done based on facts set by Puppet.
Merge pull request #8184 from yasn77/use_puppet_facts

Enable puppet facts