Full parallel downstream implementation of pulp container modules

[Alex-Welsh]

Full disclosure, Gen AI used to create new modules.
I've spent a while testing the changes against an aio-like environment, and included new test playbooks.

The code is complex, but fairly readable, it's a downstream tool and not at all critical. If we hit any issues we can easily revert to the old version.

Results for a full container sync/publish:
Old role: 2h 1m 31s
New modules: 10m 13s

The new implementation ran with a concurrency of 10, could be pushed higher. Test instance on SMS, using an aufn-like environment to create a seed that hosts pulp, so a fair bit of virtualisation overhead.

Depends on #71

[gemini-code-assist]

Summary of Changes

Hello @Alex-Welsh, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the performance and scalability of managing Pulp container content through Ansible. By introducing new parallelized modules and refactoring existing roles, it enables concurrent operations for repositories, remotes, distributions, and syncs, leading to substantial time savings in deployment and management workflows. The changes aim to provide a more robust and efficient experience for users interacting with Pulp container services.

Highlights

• Performance Improvement: Implemented full parallelization for container sync and publish operations, drastically reducing execution time from over 2 hours to just over 10 minutes for a full container sync/publish, with potential for further optimization by increasing concurrency.
• New Ansible Modules: Introduced new Ansible modules (container_repositories, container_remotes, container_distributions, container_syncs) to manage Pulp container entities in parallel, replacing previous single-entity modules and enhancing efficiency for batch operations.
• Refactored Content Management: The pulp_container_content module has been removed and its functionality refactored into a new process_content.yml task file within the pulp_container_content role, leveraging generic API calls for more flexible and concurrent content unit management.
• Concurrency Support: Added configurable concurrency options to the new container modules and relevant roles, allowing users to specify the maximum number of parallel operations for improved performance.
• Updated Dependencies and Compatibility: The collection's galaxy.yml has been updated to version 0.6.0, including a new author and pinning the pulp.squeezer dependency to 0.2.3. The README.md now reflects compatibility with Ansible 11.
• Enhanced Test Coverage: New test playbooks have been added for the container_distributions, container_remotes, container_repositories, and container_syncs modules to ensure the stability and correctness of the new parallel implementations.

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[gemini-code-assist]

Code Review

This pull request introduces a significant and impressive refactoring to parallelize Pulp container operations by introducing new concurrent Ansible modules. The performance gains described are substantial. The new modules for repositories, remotes, distributions, and syncs are well-structured, leveraging concurrent.futures for parallelism and pulp-glue for API interactions. The corresponding roles and tests have been effectively updated to use these new batch modules. My review includes a couple of suggestions for the new task-based implementation of container content management to improve correctness and simplify the code.