- creates service-account `istio-cni` with `ClusterRoleBinding` to allow gets on pods' info and delete/modifications for recovery.

- `install-cni` container
    - copies `istio-cni` and `istio-iptables` to `/opt/cni/bin`
    - creates kubeconfig for the service account the pod runs under
    - periodically copy the K8S JWT token for istio-cni on the host to connect to K8S.

However, the identities of the certificates will be of the actual user workloads, not Ztunnel's own identity.
This means Ztunnel will have multiple distinct certificates at a time, one for each unique identity (service account) running on its node.

When fetching certificates, ztunnel will authenticate to the CA with its own identity, but request the identity of another workload.

  // This list may be empty, but only if `clusterScope` is true.
  // +optional
  // +listType=set
  repeated string namespaces = 5;
}

// ServiceAccountSubject holds detailed information for service-account-kind subject.
message ServiceAccountSubject {
  // `namespace` is the namespace of matching ServiceAccount objects.
  // Required.
  optional string namespace = 1;

  // This list may be empty, but only if `clusterScope` is true.
  // +optional
  // +listType=set
  repeated string namespaces = 5;
}

// ServiceAccountSubject holds detailed information for service-account-kind subject.
message ServiceAccountSubject {
  // `namespace` is the namespace of matching ServiceAccount objects.
  // Required.
  optional string namespace = 1;

  // if a fstype is defined and the volume's access mode contains ReadWriteOnce.
  //
  // +optional
  optional string fsGroupPolicy = 5;

  // tokenRequests indicates the CSI driver needs pods' service account
  // tokens it is mounting volume for to do necessary authentication. Kubelet
  // will pass the tokens in VolumeContext in the CSI NodePublishVolume calls.

// +protobuf.options.(gogoproto.goproto_stringer)=false
message ExtraValue {
  // items, if empty, will result in an empty slice

  repeated string items = 1;
}

// TokenRequest requests a token for a given service account.
message TokenRequest {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
  // +optional

  // if a fstype is defined and the volume's access mode contains ReadWriteOnce.
  //
  // +optional
  optional string fsGroupPolicy = 5;

  // tokenRequests indicates the CSI driver needs pods' service account
  // tokens it is mounting volume for to do necessary authentication. Kubelet
  // will pass the tokens in VolumeContext in the CSI NodePublishVolume calls.

  optional int32 replicas = 1;

  // selector is a label query over pods that should match the replicas count. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
  // +optional
  // +mapType=atomic
  map<string, string> selector = 2;

  // label selector for pods that should match the replicas count. This is a serializated
  // version of both map-based and more expressive set-based selectors. This is done to

  // Pods are only limited to this list if this service account has a "kubernetes.io/enforce-mountable-secrets" annotation set to "true".
  // This field should not be used to find auto-generated service account token secrets for use outside of pods.
  // Instead, tokens can be requested directly using the TokenRequest API, or service account token secrets can be manually created.

  // the job controller hasn't yet accounted for in the status counters.
  //
  // The job controller creates pods with a finalizer. When a pod terminates
  // (succeeded or failed), the controller does three steps to account for it
  // in the job status:
  //
  // 1. Add the pod UID to the arrays in this field.
  // 2. Remove the pod finalizer.
  // 3. Remove the pod UID from the arrays while increasing the corresponding