1. update clientset, deepcopy using code-generator

2. add a dummy file tools.go to force "go mod vendor" to see
code-generator as dependencies
3. add a script to update CRD
4. add a README to document CRD updating steps
run go mod tidy
update README

vendor/k8s.io/api/events/v1beta1/generated.proto

@@ -98,7 +98,7 @@ message Event {
 // EventList is a list of Event objects.
 message EventList {
   // Standard list metadata.
-  // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata
+  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
   // +optional
   optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
 

vendor/k8s.io/api/events/v1beta1/types.go

@@ -43,11 +43,11 @@ type Event struct {
 
 	// ID of the controller instance, e.g. `kubelet-xyzf`.
 	// +optional
-	ReportingInstance string `json:"reportingInstance,omitemtpy" protobuf:"bytes,5,opt,name=reportingInstance"`
+	ReportingInstance string `json:"reportingInstance,omitempty" protobuf:"bytes,5,opt,name=reportingInstance"`
 
 	// What action was taken/failed regarding to the regarding object.
 	// +optional
-	Action string `json:"action,omitemtpy" protobuf:"bytes,6,name=action"`
+	Action string `json:"action,omitempty" protobuf:"bytes,6,name=action"`
 
 	// Why the action was taken.
 	Reason string `json:"reason,omitempty" protobuf:"bytes,7,name=reason"`
@@ -114,7 +114,7 @@ const (
 type EventList struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard list metadata.
-	// More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata
+	// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
 	// +optional
 	metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 

vendor/k8s.io/api/events/v1beta1/types_swagger_doc_generated.go

@@ -51,7 +51,7 @@ func (Event) SwaggerDoc() map[string]string {
 
 var map_EventList = map[string]string{
 	"":         "EventList is a list of Event objects.",
-	"metadata": "Standard list metadata. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata",
+	"metadata": "Standard list metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata",
 	"items":    "Items is a list of schema objects.",
 }