Minor improvements

[lfrancke]

• Lifetime of auto-generated Certificate Authorities (CA) is now set to 1 year
• Secret Operator now logs all issues secrets
• Druid: Extension handling for Druid has been improved
• Druid BREAKING: The database configuration has been moved out of the CRD into a Secret
• BREAKING change: OpenShift now uses the namespace stackable-operators in the SecretClass tls
• An example Rego ruleset for HDFS which is also part of our new end-to-end security demo
  
• Airflow: DAGs can now be modularized
• NiFi: Supports specifying custom TLS SecretClass
• ZooKeeper: K8s Admins can override the ZNode path
• OpenPolicyAgent: We now support audit/decision logging
• Hive BREAKING: The database configuration has been moved out of the CRD into a Secret

and a long list of smaller improvements and bug fixes...

Tasks

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1. Ratchet down CA lifetimes secret-operator#358
   3 of 3
   refinement-needed release/24.7.0 +2
   
2. Log secret mounts secret-operator#348
   release/24.7.0 +1
   
3. Improved extension handling druid-operator#490
   1 of 1
   epic release/24.7.0 type/feature-new +3
   
4. Use the namespace stackable-operators in the SecretClass tls in the OLM package issues#498
   customer-request openshift/infrastructure release-note/action-required release/24.7.0 size/S +5
   
5. Write a RegoRule set for HDFS issues#523
   6 of 6
   release/24.7.0 +1
   
6. Allow modularization of DAGs airflow-operator#326
   4 of 4
   customer-request release/24.7.0 size/M type/feature-new +4
   
7. Support specifying a custom TLS secretclass nifi-operator#499
   release/24.7.0 +1
   
8. Allow k8s administrators to override ZNode path zookeeper-operator#681
   demo-needed release/24.7.0 +2
   
9. Decision logging currently disabled opa-operator#422
   2 of 2
   customer-request demo-needed release-note release/24.7.0 +4
   
10. Move Database config to a secret druid-operator#352
    customer-request release-note/action-required release/24.7.0 type/feature-improvement +4
    
11. Move Database config to a secret hive-operator#148
    area/sdp customer-request release-note/action-required release/24.7.0 type/feature-improvement +5