//
  // If signerName is empty, then the ClusterTrustBundle object's name must
  // not have such a prefix.
  //
  // List/watch requests for ClusterTrustBundles can filter on this field
  // using a `spec.signerName=NAME` field selector.
  //
  // +optional
  optional string signerName = 1;

  // trustBundle contains the individual X.509 trust anchors for this

  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Rules holds all the PolicyRules for this ClusterRole
  // +optional
  repeated PolicyRule rules = 2;

  // AggregationRule is an optional field that describes how to build the Rules for this ClusterRole.
  // If AggregationRule is set, then the Rules are controller managed and direct changes to Rules will be
  // stomped by the controller.
  // +optional

  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Rules holds all the PolicyRules for this ClusterRole
  // +optional
  repeated PolicyRule rules = 2;

  // AggregationRule is an optional field that describes how to build the Rules for this ClusterRole.
  // If AggregationRule is set, then the Rules are controller managed and direct changes to Rules will be
  // stomped by the controller.
  // +optional

  // the default priority for pods that do not have any priority class.
  // Only one PriorityClass can be marked as `globalDefault`. However, if more than
  // one PriorityClasses exists with their `globalDefault` field set to true,
  // the smallest value of such global default PriorityClasses will be used as the default priority.
  // +optional
  optional bool globalDefault = 3;

}

// MetricSpec specifies how to scale based on a single metric
// (only `type` and one other matching field should be set at once).
message MetricSpec {
  // type is the type of metric source.  It should be one of "ContainerResource",
  // "External", "Object", "Pods" or "Resource", each mapping to a matching field in the object.
  // Note: "ContainerResource" type is available on when the feature-gate
  // HPAContainerMetrics is enabled