[Feature Request] Expose credentials/endpoints details (resource attributes)

[koalalorenzo]

When we deploy any cloud resource via terraform, some default credentials are provided as attributes that can be used from other resources.

Some use cases:

• Use these credentials into another provider to change extra settings
• Store these credentials into Hashicorp Vault (for dynamic secrets or just static KVv2 storage).

It would be nice to have those every time we deploy a new cluster, instead of static admin and changeme username and passwords 😅

[agadelshin]

This one depends on ability to configure default credentials here - kurrent-io/KurrentDB#2649