3990fbfe06
Replaces Consul service registration with the native Kubernetes provider so Vault labels its own pods with active/standby/perf-standby status without requiring a Consul dependency.
## Changes
- `values.yaml`: swap `service_registration "consul"` for `service_registration "kubernetes" {}`, add `VAULT_K8S_NAMESPACE` and `VAULT_K8S_POD_NAME` env vars via downward API
- `role_k8s-service-registration.yaml`: Role + RoleBinding granting the `vault` service account `get`/`update`/`patch` on pods
- `kustomization.yaml`: include new RBAC file
Reviewed-on: #171