Merge pull request #64097 from damemi/hpa-metrics-specificity

Automatic merge from submit-queue (batch tested with PRs 67894, 64097). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

HPA metrics specificity improvements

**What this PR does / why we need it**:
Improves available specificity for HPA metrics by adding metric selector fields for metrics of Pods and Objects.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Implements this KEP: https://github.com/kubernetes/community/pull/2055

**Special notes for your reviewer**:
Need to add/update tests?

**Release note**:

```release-note
Introduces autoscaling/v2beta2 and custom_metrics/v1beta2, which implement metric selectors for Object and Pods metrics, as well as allowing AverageValue targets on Objects, similar to External metrics.
```

/assign @DirectXMan12

Kubernetes-commit: fdb5707194d56cbbd0da11c5be3a2a5653e714c9

vendor/k8s.io/api/core/v1/generated.proto

@@ -3102,6 +3102,15 @@ message PodSpec {
   // More info: https://github.com/kubernetes/community/blob/master/keps/sig-network/0007-pod-ready%2B%2B.md
   // +optional
   repeated PodReadinessGate readinessGates = 28;
+
+  // RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used
+  // to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run.
+  // If unset or empty, the "legacy" RuntimeClass will be used, which is an implicit class with an
+  // empty definition that uses the default runtime handler.
+  // More info: https://github.com/kubernetes/community/blob/master/keps/sig-node/0014-runtime-class.md
+  // This is an alpha feature and may change in the future.
+  // +optional
+  optional string runtimeClassName = 29;
 }
 
 // PodStatus represents information about the status of a pod. Status may trail the actual

vendor/k8s.io/api/core/v1/types.go

@@ -28,6 +28,8 @@ const (
 	NamespaceDefault string = "default"
 	// NamespaceAll is the default argument to specify on a context when you want to list or filter resources across all namespaces
 	NamespaceAll string = ""
+	// NamespaceNodeLease is the namespace where we place node lease objects (used for node heartbeats)
+	NamespaceNodeLease string = "kube-node-lease"
 )
 
 // Volume represents a named volume in a pod that may be accessed by any container in the pod.
@@ -2865,6 +2867,14 @@ type PodSpec struct {
 	// More info: https://github.com/kubernetes/community/blob/master/keps/sig-network/0007-pod-ready%2B%2B.md
 	// +optional
 	ReadinessGates []PodReadinessGate `json:"readinessGates,omitempty" protobuf:"bytes,28,opt,name=readinessGates"`
+	// RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used
+	// to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run.
+	// If unset or empty, the "legacy" RuntimeClass will be used, which is an implicit class with an
+	// empty definition that uses the default runtime handler.
+	// More info: https://github.com/kubernetes/community/blob/master/keps/sig-node/0014-runtime-class.md
+	// This is an alpha feature and may change in the future.
+	// +optional
+	RuntimeClassName *string `json:"runtimeClassName,omitempty" protobuf:"bytes,29,opt,name=runtimeClassName"`
 }
 
 // HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the

vendor/k8s.io/api/core/v1/types_swagger_doc_generated.go

@@ -1525,6 +1525,7 @@ var map_PodSpec = map[string]string{
 	"priority":                      "The priority value. Various system components use this field to find the priority of the pod. When Priority Admission Controller is enabled, it prevents users from setting this field. The admission controller populates this field from PriorityClassName. The higher the value, the higher the priority.",
 	"dnsConfig":                     "Specifies the DNS parameters of a pod. Parameters specified here will be merged to the generated DNS configuration based on DNSPolicy.",
 	"readinessGates":                "If specified, all readiness gates will be evaluated for pod readiness. A pod is ready when all its containers are ready AND all conditions specified in the readiness gates have status equal to \"True\" More info: https://github.com/kubernetes/community/blob/master/keps/sig-network/0007-pod-ready%2B%2B.md",
+	"runtimeClassName":              "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://github.com/kubernetes/community/blob/master/keps/sig-node/0014-runtime-class.md This is an alpha feature and may change in the future.",
 }
 
 func (PodSpec) SwaggerDoc() map[string]string {

vendor/k8s.io/api/core/v1/zz_generated.deepcopy.go

@@ -3539,6 +3539,11 @@ func (in *PodSpec) DeepCopyInto(out *PodSpec) {
 		*out = make([]PodReadinessGate, len(*in))
 		copy(*out, *in)
 	}
+	if in.RuntimeClassName != nil {
+		in, out := &in.RuntimeClassName, &out.RuntimeClassName
+		*out = new(string)
+		**out = **in
+	}
 	return
 }