Investigate what the state of the Debian packaging infrastructure is in relation to puppet 7.
Debian currently have packages for puppet-agent7 and puppetdb7 we should see if theses are com[patible with puppet master 5.5. Further we should see what the state of packaging to most recent puppet-server is
puppet-agent (currently in experimental):
https://tracker.debian.org/news/1325064/accepted-puppet-agent-7160-1-source-all-into-experimental-experimental/
puppetdb (currently in experimental):
https://tracker.debian.org/news/1346226/accepted-puppetdb-7101-1-source-into-experimental/