Replace restricted Bitnami Kafka images to fix Ansible pulls and Docker Compose setups

[igor-soldev]

Hi team,

I noticed that your tools/docker-kafka setups and the cloudlab-ansible/docker_images.yml playbook rely on bitnami/kafka:3.5.

The Problem
Bitnami has restricted public access to their Docker images.

1. Ansible Failure: The command docker pull bitnami/kafka:3.5 in cloudlab-ansible/docker_images.yml will likely fail with an "access denied" error when running on new cloud nodes, breaking the automated deployment.
2. Compose Failure: Users trying to spin up the Kafka clusters using the docker-compose-kafka*.yaml files will encounter similar pull errors.

Proposed Solution
I suggest switching to soldevelo/kafka:3.5.
This image is a free, drop-in replacement that works exactly like the Bitnami version (preserving configuration and environment variables), but it allows for unrestricted pulling, ensuring your automation scripts and benchmarks run smoothly.

Suggested Changes:

1. In cloudlab-ansible/docker_images.yml:

# Old
docker pull bitnami/kafka:3.5

# New
docker pull soldevelo/kafka:3.5

2. In tools/docker-kafka/docker-compose*.yaml files:

# Old
image: docker.io/bitnami/kafka:3.5

# New
image: soldevelo/kafka:3.5

Affected files:

• cloudlab-ansible/docker_images.yml
• tools/docker-kafka/docker-compose.yaml
• tools/docker-kafka/docker-compose-kafka1.yaml through kafka4.yaml

I can submit a Pull Request to update these references across the repository. Would you be open to that?