Update kubernetes dependency and move to correct place

[sarah-witt]

What does this PR do?

Makes kubernetes an official dependency of kubevirt_api and updates version

Motivation

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.00%. Comparing base (3d8b6d5) to head (587e2b5).
Report is 14 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
kubevirt_api	82.75% <ø> (ø)

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