The setting trusted_puppetmaster_hosts is used to allow hosts to submit stuff to the facts/reports API endpoint. The name made sense a long time ago, but these days other plugins and any user can submit stuff to this API to generate their own reports, send facts from ohai, etc..
Added by Daniel Lobato Garcia about 6 years ago
Fixes #22721 - Rename setting to trusted_hosts
The setting trusted_puppetmaster_hosts is used to allow hosts to submit
stuff to the facts/reports API endpoint.
The name made sense a long time ago, but these days other plugins and
any user can submit stuff to this API to generate
their own reports, send facts from ohai, etc..
It should be renamed to 'trusted_hosts'