chore: Switch liveness probe to tcp socket instead of httpGet

[sbernauer]

Description

In SUP-159 a customer wanted to enable security for the Namenode HTTP API.
This resulted in /dfshealth.html returning a 401 instead of a 200 - thus failing the liveness probe.

This PR allows customers to configOverride security for the HTTP APIs (hopefully until we support them natively)

We intentionally did not write a curl script that checks for 200 or 401 but just went with the TCP port.

Definition of Done Checklist

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Author

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1. Changes are OpenShift compatible
2. CRD changes approved
3. CRD documentation for all fields, following the style guide.
4. Helm chart can be installed and deployed operator works
5. Integration tests passed (for non trivial changes)
6. Changes need to be "offline" compatible

Reviewer

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1. Code contains useful comments
2. Changelog updated
3. Cargo.toml only contains references to git tags (not specific commits or branches)

Acceptance

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1. Feature Tracker has been updated
2. Proper release label has been added
3. Roadmap has been updated

[siegfriedweber]

LGTM

[sbernauer]

Thanks for the review!