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/apimachinery/pkg/util/intstr/intstr.go

@@ -45,7 +45,7 @@ type IntOrString struct {
 }
 
 // Type represents the stored type of IntOrString.
-type Type int
+type Type int64
 
 const (
 	Int    Type = iota // The IntOrString holds an int.