Merge pull request kubernetes#85728 from prksu/make-apiservice.spec.service-optional

Make APIService.spec.service optional in the openapi v2 spec

Author: k8s-ci-robot

api/openapi-spec/swagger.json

@@ -48,6 +48,7 @@ type APIServiceSpec struct {
 	// on port 443
 	// If the Service is nil, that means the handling for the API groupversion is handled locally on this server.
 	// The call will simply delegate to the normal handler chain to be fulfilled.
+	// +optional
 	Service *ServiceReference
 	// Group is the API group name this server hosts
 	Group string

staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/types.go

@@ -48,7 +48,8 @@ type APIServiceSpec struct {
 	// on port 443
 	// If the Service is nil, that means the handling for the API groupversion is handled locally on this server.
 	// The call will simply delegate to the normal handler chain to be fulfilled.
-	Service *ServiceReference `json:"service" protobuf:"bytes,1,opt,name=service"`
+	// +optional
+	Service *ServiceReference `json:"service,omitempty" protobuf:"bytes,1,opt,name=service"`
 	// Group is the API group name this server hosts
 	Group string `json:"group,omitempty" protobuf:"bytes,2,opt,name=group"`
 	// Version is the API version this server hosts.  For example, "v1"

staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/generated.proto

@@ -48,7 +48,8 @@ type APIServiceSpec struct {
 	// on port 443
 	// If the Service is nil, that means the handling for the API groupversion is handled locally on this server.
 	// The call will simply delegate to the normal handler chain to be fulfilled.
-	Service *ServiceReference `json:"service" protobuf:"bytes,1,opt,name=service"`
+	// +optional
+	Service *ServiceReference `json:"service,omitempty" protobuf:"bytes,1,opt,name=service"`
 	// Group is the API group name this server hosts
 	Group string `json:"group,omitempty" protobuf:"bytes,2,opt,name=group"`
 	// Version is the API version this server hosts.  For example, "v1"