[FEATURE REQUEST] Create server spec for Helm repository

[toszo]

Is your feature request related to a problem? Please describe. We should have server specs that are checking that repository had been setup correctly.

Describe the solution you'd like We want to have some basics test that prove, that repository works as expected.

Describe alternatives you've considered This can be also tested with other components installation, but it will be better also to have test testing Helm repository.

Additional context All information regarding Serverspec tool/framework can be found at https://serverspec.org/.

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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