Unpin KFP SDK for Kubeflow 1.11.0 and clean up residual dex-based examples

[tmvfb]

Summary

Unpin all KFP SDK pins to match KFP backend 2.15.0 (provided by our custom notebooks!) in Kubeflow v1.11.0. The hint at version is still there in the notebook, but it's no longer installed, to increase compatibility between our images and platform components.

Additionally, remove Dex-based remote submission utilities that are no longer functional.

KFP SDK bumps:

• pipelines/minimal-container-components: kfp 2.0.1 → Notebook's version (2.15.0 hint)
• pipelines/lightweight-python-package: kfp[all] 2.12.1 → Notebook's version (2.15.0 hint)
• pipelines/mobile-price-classification: same
• mlflow/mlflow-kfp-example.ipynb: same

Dex/auth cleanup:

• Removed utils/auth_session.py and the entire utils/ directory — Dex username/password session cookie flow no longer works with Keycloak/oauth2-proxy auth
• Removed submit-remote.py from minimal-container-components and the associated "Preparing for Remote KFP Connection" README section — remote submission is not functional with the current JWT auth setup
• Removed unused requirements.txt files from pipeline examples (not referenced by any Dockerfile, script, or CI config; notebooks install kfp inline via pip magic commands)

For remote pipeline submission, refer to the pipe-fiction example which documents the Keycloak OIDC client flow.

Context

Part of the Kubeflow 1.11.0 upgrade. Companion PRs:

• prokube/prokube — main platform upgrade (branch feature/kubeflow-1.11.0)
• prokube/prokube-images — notebook image and MLflow server updates (PR #34)

What was NOT changed (and why)

• KServe examples (serving/): Already pin kserve>=0.15.2, compatible with KServe v0.15.2 in Kubeflow 1.11.0
• Katib example (hparam-tuning/): Uses kubeflow.org/v1beta1 API (unchanged) with batch/v1 Job (no Training Operator dependency)
• Istio VirtualService examples: Use v1/v1beta1 APIs still served in Istio 1.28
• MLflow version in notebook (mlflow==2.17.2): Not bumped — separate concern from Kubeflow upgrade

[geier]

what about kubeflow-examples/pipelines/lightweight-components/mobile-price-classifications.ipynb ?

[tmvfb]

what about kubeflow-examples/pipelines/lightweight-components/mobile-price-classifications.ipynb ?

good point, updated

[Copilot]

Pull request overview

This PR aligns the Kubeflow Pipelines example content with the Kubeflow 1.11.0 platform upgrade by removing Dex-based remote-submission utilities and adjusting example dependency guidance around the KFP SDK.

Changes:

• Removed the Dex auth_session.py helper and its docs (no longer compatible with current auth setup).
• Removed the minimal-container-components remote submission script and the associated README instructions.
• Removed per-example requirements.txt files and updated notebooks to reference (commented) KFP 2.15.0 availability in prokube notebook images.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pipelines/utils/README.md	Deleted Dex auth-session documentation.
pipelines/utils/auth_session.py	Deleted Dex cookie/session helper implementation.
pipelines/minimal-container-components/submit-remote.py	Deleted remote submission script that depended on Dex auth flow.
pipelines/minimal-container-components/requirements.txt	Removed pinned KFP requirement for this example.
pipelines/minimal-container-components/README.md	Removed remote-submission guidance; now only documents in-cluster submission.
pipelines/lightweight-python-package/requirements.txt	Removed pinned kfp[all] requirement for this example.
pipelines/lightweight-components/mobile-price-classifications.ipynb	Added commented dependency note referencing KFP 2.15.0.
mlflow/mlflow-kfp-example.ipynb	Replaced active pip install with commented dependency note referencing KFP 2.15.0.

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