Fact package_provider is missing

[mxey]

The package_provider fact is missing, probably because Facter only outputs it if called with --puppet? I assume FacterDB is mostly in the used in the context of Puppet spec testing, so I think supporting Puppet-specific facts makes sense

# facter --puppet package_provider
apt

[DavidS]

The package_provider fact is deployed by the stdlib module, which is out of scope for current facterdb, as it needs to also work for testing modules that do not depend on the stdlib module.