Apache Druid

I believe if you add `postgresql-metadata-storage` extension to your load list it’ll be enough

```druid.extensions.loadList=["postgresql-metadata-storage", "druid-s3-extensions", "druid-stats", "druid-histogram", "druid-datasketches", "druid-kafka-indexing-service"]```


I did that but it explicitly looks for postgresql-jar under lib which won't be added based on above

In kubernetes, the jar will be in /opt/druid/extensions/postgresql-metadata-storage/postgresql-xx.x.x.jar

And it is just dynamically loaded at startup.