runtime-class: update type description to indicate beta

Signed-off-by: Eric Ernst <[email protected]>

Author: Eric Ernst

api/openapi-spec/swagger.json

@@ -2672,7 +2672,7 @@ type PodSpec struct {
 	// 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://git.k8s.io/enhancements/keps/sig-node/runtime-class.md
-	// This is an alpha feature and may change in the future.
+	// This is a beta feature as of Kubernetes v1.14.
 	// +optional
 	RuntimeClassName *string
 	// EnableServiceLinks indicates whether information about services should be injected into pod's

pkg/apis/core/types.go

@@ -2965,7 +2965,7 @@ type PodSpec struct {
 	// 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://git.k8s.io/enhancements/keps/sig-node/runtime-class.md
-	// This is an alpha feature and may change in the future.
+	// This is a beta feature as of Kubernetes v1.14.
 	// +optional
 	RuntimeClassName *string `json:"runtimeClassName,omitempty" protobuf:"bytes,29,opt,name=runtimeClassName"`
 	// EnableServiceLinks indicates whether information about services should be injected into pod's