Identify Puppet Server repos containing user-facing strings

• Identify the Puppet Server repos that contain user-facing strings so we know which repos require the clj-i18n library and externalization wrapper function.
• Once the audit of repos has been completed, list the repos in this ticket and update this Confluence page.

nathaniel provided the following repos as the ones that contain the majority of strings:
puppetserver
pe-file-sync
pe-puppet-server-extensions
jvm-ssl-utils
trapperkeeper-status
trapperkeeper-metrics
trapperkeeper

There may be some additional repos containing a small number of user-facing errors.