Run puppet without puppet master.
send puppet run report and facts to a foreman server.
use this code run puppet manifests.
$ puppet apply --config /opt/puppet/etc/puppet.conf --modulepath=${WD}/modules ${WD}/manifests
use gnupg verify the download code.
The pushfacts shell script will send facts to a foreman server.
and when the puppet will use the foreman.rb report run status to a foreman server.
you can evan use a shell script get enc data from a foreman server.