[FEATURE REQUEST] Add option to skip downloading Docker images and creating local registry

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Is your feature request related to a problem? Please describe. Downloading Docker images (in upgrade mode) takes about 4 min. Running image_registry role takes about 9 min.

When a cluster without k8s is needed (often for development purposes), about 13 minutes is wasted since Docker images are not needed.

Describe the solution you'd like Add download_strategy setting to epicli. By default it could have smart (or selective) value - to download only requirements for enabled/used components. The alternative value would be full (or everything).

This will require adding option(s) to the download_requirements.sh scripts as well.

This task is about implementing such option just for images (most time consuming) but later it would be nice to extend it for other components (roles).

Describe alternatives you've considered None

Additional context None

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DoD checklist

• Changelog
  • [ ] updated
  • [ ] not needed
• COMPONENTS.md
  • [ ] updated
  • [ ] not needed
• Schema
  • [ ] updated
  • [ ] not needed
• Backport tasks
  • [ ] created
  • [ ] not needed
• Documentation
  • [ ] added
  • [ ] updated
  • [ ] not needed
• [ ] Feature has automated tests
• [ ] Automated tests passed (QA pipelines)
  • [ ] apply
  • [ ] upgrade
  • [ ] backup/restore
• [ ] Idempotency tested
• [ ] All conversations in PR resolved
• [ ] Solution meets requirements and is done according to design doc
• [ ] Usage compliant with license