Update the kserve m2m test with real Kubeflow namespaces

[juliusvonkohout]

Pull Request Template for Kubeflow manifests Issues

✏️ A brief description of the changes

I changed the kserve test to test at least the m2m part in real KF user namespaces

📦 List any dependencies that are required for this change

My PR depends on #

🐛 If this PR is related to an issue, please put the link to the issue here.

The following issues are related, because ...
#2907
#2811

✅ Contributor checklist

• Make sure you have tested with kustomize. See Installation Prerequisites
• All the commits have been signed-off (To pass the DCO check)

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[juliusvonkohout]

We need to integrate the authorization changes from #2811
@kromanow94 do you want to help?