🌱 Fix example manifests generation

[wgslr]

What this PR does / why we need it:

• fixes the examples/generate.sh script to successfully generate example manifests. It also pins the versions of images used in example manifests to avoid breaking compatibility with the manifests.
• updates ensure-kustomize.sh to use an up-to-date URL for downloading kustomize

This allows generating examples and running make deploy, which is a step in a good direction. There is still an issue with capm3-baremetal-operator-controller-manager not receiving basic auth credentials, which will be addressed in a future PR.

I will squash the commits after review.

[kashifest]

Thanks a lot for taking caring of this.
/test-integration
/approve

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[kashifest]

/test-integration

[namnx228]

Overall, it looks good to me. Just a question: Why do we need to have an image version patch instead of directly fix the versions of CAPI components.

[wgslr]

Overall, it looks good to me. Just a question: Why do we need to have an image version patch instead of directly fix the versions of CAPI components.

If I understand the situation correctly, moving to the newer versions in the examples would be moving to CAPM3 version v1alpha4. Which is a separate effort, and for now we also want to have working examples with v1alpha3.

I'd also argue that even if a newer version should be used, it still should be pinned to specific tags rather than the master to make the examples reliable and reproducible.

[fmuyassarov]

@wgslr This looks good. Can you please squash the commits before we merge the PR?

[wgslr]

@fmuyassarov done

[fmuyassarov]

/test-integration
/lgtm