Add native product metrics endpoints

[xeniape]

Part of: stackabletech/issues#728

PRs

• chore: add built-in Prometheus support #955
• chore(zookeeper): remove jmx exporter docker-images#1161
• Revert "chore(zookeeper): remove jmx exporter (#1161)" docker-images#1175

Acceptance Criteria

• Remove the JMX jar and config from product images
• Operators expose metrics ports directly from products that support them.
• Updated tests where needed.
• Updated product documentation