//
  // If podSelector is also set, then the NetworkPolicyPeer as a whole selects
  // the pods matching podSelector in the namespaces selected by namespaceSelector.
  // Otherwise it selects all pods in the namespaces selected by namespaceSelector.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 2;

```

The user-defined overlay uses a path spec that includes the ability to select list items by key. In the example above,
the container with the key-value "name: discovery" is selected from the list of containers, and the command line
parameter with value "30m" is selected to be modified. The advanced overlay capability is described in more detail in
the spec.

## Interaction with controller

Istio's AuthorizationPolicy has label selectors.
However, we intentionally do not send those as part of the Workload API, in order to keep the size low.

The obvious solution to this is to put the list of selected workloads into the policy itself.
However, this means anytime a workload changes (often), we need to update the policy.

Instead, the opposite was chosen: each workload will list the policies that select it.

  // Webhooks with side effects MUST implement a reconciliation system, since a request may be
  // rejected by a future step in the admission chain and the side effects therefore need to be undone.
  // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
  // sideEffects == Unknown or Some. Defaults to Unknown.
  // +optional
  optional string sideEffects = 6;

  // Webhooks with side effects MUST implement a reconciliation system, since a request may be
  // rejected by a future step in the admission chain and the side effects therefore need to be undone.
  // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
  // sideEffects == Unknown or Some.
  optional string sideEffects = 6;

  // ttlSecondsAfterFinished after the Job finishes, it is eligible to be
  // automatically deleted. When the Job is being deleted, its lifecycle
  // guarantees (e.g. finalizers) will be honored. If this field is unset,
  // the Job won't be automatically deleted. If this field is set to zero,
  // the Job becomes eligible to be deleted immediately after it finishes.
  // +optional
  optional int32 ttlSecondsAfterFinished = 8;

  //
  // If PodSelector is also set, then the NetworkPolicyPeer as a whole selects
  // the Pods matching PodSelector in the Namespaces selected by NamespaceSelector.
  // Otherwise it selects all Pods in the Namespaces selected by NamespaceSelector.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 2;

  // are held in a queue until they can be executed or a queuing limit
  // is reached.
  // "Reject" means that requests that can not be executed upon arrival
  // are rejected.
  // Required.
  // +unionDiscriminator
  optional string type = 1;

  // `queuing` holds the configuration parameters for queuing.
  // This field may be non-empty only if `type` is `"Queue"`.
  // +optional

  // are held in a queue until they can be executed or a queuing limit
  // is reached.
  // "Reject" means that requests that can not be executed upon arrival
  // are rejected.
  // Required.
  // +unionDiscriminator
  optional string type = 1;

  // `queuing` holds the configuration parameters for queuing.
  // This field may be non-empty only if `type` is `"Queue"`.
  // +optional

message ResourceClaimTemplateSpec {
  // ObjectMeta may contain labels and annotations that will be copied into the PVC
  // when creating it. No other fields are allowed and will be rejected during
  // validation.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Spec for the ResourceClaim. The entire content is copied unchanged