Validate on a live cluster that:
- the new `spec.oidc.*` fields are admitted by the Kubernetes CRD;
- cozystack-api accepts the updated schema and renders a HelmRelease;
- the KamajiControlPlane gains `--authentication-config` and the
chart-owned `cozy-oidc-authn-config` mount and volume;
- the AuthenticationConfiguration Secret carries the cozy realm
issuer URL and the per-cluster audience;
- per-cluster `KeycloakClient` + audience `KeycloakClientScope`
land in the cozy realm (with the EDP operator present).
The full end-to-end RBAC flow (Job → CRBs inside the tenant cluster)
needs a Kamaji bringup, which kubernetes-{latest,previous}.bats
already cover for the cluster path; the OIDC browser flow is
explicitly out of scope per the design proposal. This file covers
only what the render-side regression budget can pay for.
Signed-off-by: Ivan Okhotnikov <ivan.okhotnikov@aenix.io>