// Verb is a list of kubernetes resource API verbs, like: get, list, watch, create, update, delete, proxy.  "*" means all.
  repeated string verbs = 1;

  // APIGroups is the name of the APIGroup that contains the resources.  If multiple API groups are specified, any action requested against one of
  // the enumerated resources in any API group will be allowed.  "*" means all.
  // +optional
  repeated string apiGroups = 2;

canary deployments for Istio components. It should be possible to deploy a new version while keeping the
stable version in place and gradually migrate apps to the new version.

- More flexibility: the new installer allows multiple 'environments', allowing applications to select
a set of control plane settings and components. While the entire mesh respects the same APIs and config,

  // hostname of this endpoint. This field may be used by consumers of
  // endpoints to distinguish endpoints from each other (e.g. in DNS names).
  // Multiple endpoints which use the same hostname should be considered
  // fungible (e.g. multiple A values in DNS). Must be lowercase and pass DNS
  // Label (RFC 1123) validation.
  // +optional
  optional string hostname = 3;

  //
  // - In: the requirement is satisfied if at least one container exit code
  //   (might be multiple if there are multiple containers not restricted
  //   by the 'containerName' field) is in the set of specified values.
  // - NotIn: the requirement is satisfied if at least one container exit code
  //   (might be multiple if there are multiple containers not restricted
  //   by the 'containerName' field) is not in the set of specified values.

### Inbound

Traffic entering a pod over HBONE will be handled by the "inbound" code path, on port 15008.

Incoming requests have multiple "layers": TLS wrapping HTTP CONNECT that is wrapping the user's connection.

To unwrap the first layer, we terminate TLS.
As part of this, we need to pick the correct certificate to serve on behalf of the destination workload.

  // +optional
  optional IngressBackend defaultBackend = 1;

  // tls represents the TLS configuration. Currently the Ingress only supports a
  // single TLS port, 443. If multiple members of this list specify different hosts,
  // they will be multiplexed on the same port according to the hostname specified
  // through the SNI TLS extension, if the ingress controller fulfilling the

  // and be subject to the failure policy.
  repeated string admissionReviewVersions = 8;

  // reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation.
  // Allowed values are "Never" and "IfNeeded".
  //
  // Never: the webhook will not be called more than once in a single admission evaluation.
  //

  // A volume that is both attached and mounted on a node is considered to be used once, not twice.
  // The same rule applies for a unique volume that is shared among multiple pods on the same node.
  // If this field is nil, then the supported number of volumes on this node is unbounded.
  // +optional
  optional int32 count = 1;

  // Verbs is a list of Verbs that apply to ALL the ResourceKinds contained in this rule. '*' represents all verbs.
  repeated string verbs = 1;

  // APIGroups is the name of the APIGroup that contains the resources.  If multiple API groups are specified, any action requested against one of
  // the enumerated resources in any API group will be allowed. "" represents the core API group and "*" represents all API groups.
  // +optional

  // Verb is a list of kubernetes resource API verbs, like: get, list, watch, create, update, delete, proxy.  "*" means all.
  repeated string verbs = 1;

  // APIGroups is the name of the APIGroup that contains the resources.  If multiple API groups are specified, any action requested against one of
  // the enumerated resources in any API group will be allowed.  "*" means all.
  // +optional
  repeated string apiGroups = 2;