chore: add bundle yaml for ambient integration

[NohaIhab]

Closes #1402

Should be aligned with https://github.com/canonical/charmed-kubeflow-solutions/tree/track/1.11/modules/kubeflow-ambient

Summary

• Replaced Istio Pilot and Gateway with new Istio charms (istio-beacon-k8s, istio-ingress-k8s, and istio-k8s), updated their channels and repo references, and removed Knative-related charms.
• Added new relations to support the updated Istio service mesh and ingress configuration, replacing old ingress and gateway relations with new service mesh and gateway metadata relations.
• Updated kubeflow-profiles options to specify the new Istio gateway service account and enable ambient mesh mode.
• Increased the scale of katib-db and kfp-db from 1 to 3, this matches the recommendation by mysql team
• Added the kubeflow-trainer application
• Changed kserve-controller deployment mode from serverless to rawdeployment.
• Added trust: true to the minio application, now required from the service mesh lib

Testing

• Install and setup juju and microk8s, tutorial steps from this commit can be followed
• Clone this repo and checkout the branch

git clone https://github.com/canonical/bundle-kubeflow.git
cd bundle-kubeflow
git checkout kf-8459-chore-update-latest-edge-ambient

• Add kubeflow model

juju add-model kubeflow

• Deploy the bundle from the branch

cd releases/latest/edge
juju deploy ./bundle.yaml --trust

• Wait until all charms are active
• Run the UATs from main branch

  git clone https://github.com/canonical/charmed-kubeflow-uats.git ~/charmed-kubeflow-uats
  cd ~/charmed-kubeflow-uats
  git checkout main
  tox -e kubeflow-local -- --include-kubeflow-trainer-tests

[MattiaSarti]

question: was this tested, even if just manually? If so, can we add the commands to reproduce the testing to the pull request's description?

[NohaIhab]

Hi @MattiaSarti, yes, I tested it on testfilnger and added the instructions to the description. Good suggestion!

[MattiaSarti]

Hi @MattiaSarti, yes, I tested it on testfilnger and added the instructions to the description. Good suggestion!

Thanks, @NohaIhab, that's perfect, then!

[dariofaccin]

To get the UATs working, I had to pass --bundle="" due to bundle correctness check requiring istio-ingressgateway and istio-pilot charms to be deployed.
Beside that, I tested it locally including also ambient tests:

tox -e kubeflow-local -- --bundle="" --include-ambient-tests --include-kubeflow-trainer-tests

Result was positive.