Init vendir

[QuentinBisson]

This PR:

• inits keda-app with vendir
• creates cilium network policy

Be aware that we can only use a tag of KEDA right now because of kubernetes compatibily reasons.

• v2.11 works starting from Kubernetes 1.25
• v2.12 works starting from Kubernetes 1.26

TODOs:

• Deploy in one of our clusters (tested in a 19.2.0 cluster)
  • Add cilium network policies (upstream PR Add ciliumnetworkpolicies kedacore/charts#558)
  • Ensure no PSS violation and no PSP usage
• Retag image
  • Added support for our registry override (upstream PR Allow image registry override for all keda components kedacore/charts#557 in latest version (not applicable to us))
• Test basic triggers and HPA to be sure the app works
• Rewrite all documentations (READMEs)
• Basic alerting and dashboards

Testing

Description on how keda can be tested.

• fresh install works
  • AWS

Checklist

• Update changelog in CHANGELOG.md.
• Make sure values.yaml and values.schema.json are valid.

[QuentinBisson]

App was tested on a workload cluster with a trigger based on REDIS

[QuantumEnigmaa]

Just out of my own curiosity : why using vendir for this particular app instead of chart dependency ?

[QuentinBisson]

@QuantumEnigmaa Because this app was supposed to be maintained by @giantswarm/team-turtles and they prefer to use vendir

[QuantumEnigmaa]

LGTM