Add object storage persistence to dist-cache

[kklimonda-fn]

Description of change

Checklist

• [x] Tested in playground or other setup
• [x] Screenshot (Grafana) from playground added to PR for 15+ minute run
• [x] Documentation is changed or added

Summary by CodeRabbit

• New Features

  • Introduced object storage configuration options for enhanced data persistence.
  • Added object storage backed distributed map (DMap) for persistent caching.
  • Implemented new metrics for monitoring persistent cache performance.

• Enhancements

  • Expanded rate limiter functionality with additional persistent storage support.
  • Improved configuration documentation for object storage integration.

• Documentation

  • Updated reference configuration documentation with new object storage section.

• Refactor

  • Refactored distributed cache metrics to support new persistent cache metrics.
  • Enhanced distributed cache constructor to include object storage and Prometheus registry.

• Bug Fixes

  • Corrected comment formatting in configuration-related files for clarity.

• Style

  • Standardized code comments to use backticks for type names.

• Tests

  • Added test cases to verify the default object storage configuration.

Please note that these release notes are a high-level summary and additional details may be found in the full release documentation.

[coderabbitai[bot]]

Walkthrough

The overarching change revolves around the integration of object storage into an existing system. This integration includes the addition of configuration options, modification of existing structures and functions to accommodate object storage, and the introduction of new types and metrics to handle persistent caching. The updates span across various components, enhancing the system's capability to interact with object storage backends.

Changes

File Path	Change Summary
.github/styles/.../accept.txt	Added "exat" to accepted vocabulary
cmd/aperture-agent/.../agent.go	Imported objectstorage, added annotation and invocation for object storage
docs/content/.../agent.md	Added object_storage configuration section
operator/api/.../agent_types.go	Added ObjectStorage field to AgentConfigSpec struct
operator/api/.../zz_generated.deepcopy.go	Updated DeepCopyInto method to include ObjectStorage
operator/controllers/.../config_test.tpl operator/controllers/.../configmaps_test.go	Added object storage configuration in tests
pkg/dist-cache/.../*.go	Reformatted metrics labels, added object storage to DistCache, and modified related functions
pkg/metrics/schema.go	Introduced new metrics for persistent caching
pkg/objectstorage/.../*.go	Added various object storage related types, functions, and constants
pkg/rate-limiter/.../global-token-bucket.go pkg/config/.../*.go	Minor updates and comment formatting changes

🐇✨ To store our data wide and far, We've woven object storage into our bazaar. Buckets, keys, and persistent cache, Our system's grown with quite the dash! 🎉 🐇✨

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[kwapik]