feat(clusterChecksRunner) Add hostaliases to clusterchecksrunner

[LFSb]

What this PR does / why we need it:

We want to enable the TLS integration as a clustercheck, but we need to point it to some endpoints that are not present in our DNS.

An alternative solution is to implement the TLS test through a synthetic test runner (where hostAliases are available), but this solution is better from a self-service perspective.

Special notes for your reviewer:

I pretty much copy-pasted the contents of this. This is my first time contributing, so let me know if I could have done anything better the next time 🙂

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• Chart Version bumped
• Documentation has been updated with helm-docs (run: .github/helm-docs.sh)
• CHANGELOG.md has been updated
• Variables are documented in the README.md