Fix previous failing kubernetes integration spec

What does this MR do?

Fix previous failing kubernetes integration spec

Use sign_in_as_admin
Use let(bang) so the cluster gets fabricated first
Dequarantine spec
Add skip_live_env tag

Closes #209085 (closed)

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content