[bitnami/postgresql] Add primary.service.enabled parameter to allow disabling regular service

[aravind4799]

Description of the change

Adds primary.service.enabled parameter to allow disabling the regular PostgreSQL primary service. In single-node deployment scenarios, the headless service already provides sufficient functionality for pod discovery, making the regular service optional. This change allows users to disable the regular service when only the headless service is needed, reducing unnecessary Kubernetes resources.

The parameter defaults to true to maintain backward compatibility - existing deployments will continue to work without any changes.

Benefits

• Reduced resource overhead: Users can disable the regular service in single-node deployments where only the headless service is needed
• More flexible configuration: Provides users with control over which services are created
• Backward compatible: Default value of true ensures existing deployments are unaffected

Possible drawbacks

None identified. The change is backward compatible and optional.

Applicable issues

• Fixes add service.enabled helm value #36427

Additional information

• The headless service (svc-headless.yaml) remains always enabled as it's required for StatefulSet pod discovery
• When primary.service.enabled=false, only the headless service is created
• Tested with helm template to verify both default and disabled scenarios

[github-actions]

This Pull Request has been automatically marked as "stale" because it has not had recent activity (for 15 days). It will be closed if no further activity occurs. Thank you for your contribution.

[aravind4799]

Let me know if there are any chances

[fmulero]

Thnaks a lot @aravind4799 for your contribution and Sorry about my very late response.

LGTM