puppetize all PostgreSQL servers

The tor-weather outage (#41388 (closed)) has shown that database servers that were not in Puppet were more brittle and subject to breakage. Let's configure all database servers properly in Puppet.

I believe @lavamind has already done so for rude as part of the %Debian 12 bookworm upgrade (#41252 (closed)), let's keep doing this.

@lavamind, can you take this? at least to document your conversion procedure at first?

• bacula-director-01
• materculae
• meronense
• metricsdb-01
• polyanthum
• puppetdb-01
• rude
• survey-01
• weather-01