// when replacing pods on nodes, or when scaling down. The default policy is
  // `OrderedReady`, where pods are created in increasing order (pod-0, then
  // pod-1, etc) and the controller will wait until each pod is ready before
  // continuing. When scaling down, the pods are removed in the opposite order.
  // The alternative policy is `Parallel` which will create pods in parallel

  optional WebhookClientConfig clientConfig = 2;

  // Rules describes what operations on what resources/subresources the webhook cares about.
  // The webhook cares about an operation if it matches _any_ Rule.
  // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
  // from putting the cluster in a state which cannot be recovered from without completely

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time startTime = 2;

  // Represents time when the job was completed. It is not guaranteed to
  // be set in happens-before order across separate operations.
  // It is represented in RFC3339 form and is in UTC.
  // The completion time is only set when the job finishes successfully.
  // +optional

This offered performance benefits that were too large to leave on the table, as well as opportunities to tune to our specific needs.

## Configuration protocol

Ztunnel, of course, needs to be dynamically configured in order to make decisions on how it should handle traffic.
For this purpose, we chose to use xDS transport protocol due to our expertise and existing infrastructure, and because the protocol is well suited to our needs.

  optional WebhookClientConfig clientConfig = 2;

  // Rules describes what operations on what resources/subresources the webhook cares about.
  // The webhook cares about an operation if it matches _any_ Rule.
  // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
  // from putting the cluster in a state which cannot be recovered from without completely

  // DriverName defines the name of the dynamic resource driver that is
  // used for allocation of a ResourceClaim that uses this class.
  //
  // Resource drivers have a unique name in forward domain order
  // (acme.example.com).
  optional string driverName = 2;

  // ParametersRef references an arbitrary separate object that may hold
  // parameters that will be used by the driver when allocating a

  repeated ClusterTrustBundle items = 2;
}

// ClusterTrustBundleSpec contains the signer and trust anchors.
message ClusterTrustBundleSpec {
  // signerName indicates the associated signer, if any.
  //
  // In order to create or update a ClusterTrustBundle that sets signerName,
  // you must have the following cluster-scoped permission:
  // group=certificates.k8s.io resource=signers resourceName=<the signer name>
  // verb=attest.
  //

  // plugin will proactively rotate the service account token. The kubelet will
  // start trying to rotate the token if the token is older than 80 percent of
  // its time to live or if the token is older than 24 hours.Defaults to 1 hour
  // and must be at least 10 minutes.
  // +optional
  optional int64 expirationSeconds = 2;

// It contains a list of APIVersionDiscovery that holds a list of APIResourceDiscovery types served for a version.
// Versions are in descending order of preference, with the first version being the preferred entry.
message APIGroupDiscovery {
  // Standard object's metadata.
  // The only field completed will be name. For instance, resourceVersion will be empty.

  // in this list can only be removed.
  // Finalizers may be processed and removed in any order.  Order is NOT enforced
  // because it introduces significant risk of stuck finalizers.
  // finalizers is a shared field, any actor with permission can reorder it.
  // If the finalizer list is processed in order, then this can lead to a situation
  // in which the component responsible for the first finalizer in the list is