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/storage/v1/zz_generated.deepcopy.go

@@ -25,6 +25,115 @@ import (
 	runtime "k8s.io/apimachinery/pkg/runtime"
 )
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *CSINode) DeepCopyInto(out *CSINode) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.Spec.DeepCopyInto(&out.Spec)
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CSINode.
+func (in *CSINode) DeepCopy() *CSINode {
+	if in == nil {
+		return nil
+	}
+	out := new(CSINode)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *CSINode) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *CSINodeDriver) DeepCopyInto(out *CSINodeDriver) {
+	*out = *in
+	if in.TopologyKeys != nil {
+		in, out := &in.TopologyKeys, &out.TopologyKeys
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	if in.Allocatable != nil {
+		in, out := &in.Allocatable, &out.Allocatable
+		*out = new(VolumeNodeResources)
+		(*in).DeepCopyInto(*out)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CSINodeDriver.
+func (in *CSINodeDriver) DeepCopy() *CSINodeDriver {
+	if in == nil {
+		return nil
+	}
+	out := new(CSINodeDriver)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *CSINodeList) DeepCopyInto(out *CSINodeList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]CSINode, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CSINodeList.
+func (in *CSINodeList) DeepCopy() *CSINodeList {
+	if in == nil {
+		return nil
+	}
+	out := new(CSINodeList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *CSINodeList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *CSINodeSpec) DeepCopyInto(out *CSINodeSpec) {
+	*out = *in
+	if in.Drivers != nil {
+		in, out := &in.Drivers, &out.Drivers
+		*out = make([]CSINodeDriver, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CSINodeSpec.
+func (in *CSINodeSpec) DeepCopy() *CSINodeSpec {
+	if in == nil {
+		return nil
+	}
+	out := new(CSINodeSpec)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *StorageClass) DeepCopyInto(out *StorageClass) {
 	*out = *in
@@ -271,3 +380,24 @@ func (in *VolumeError) DeepCopy() *VolumeError {
 	in.DeepCopyInto(out)
 	return out
 }
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *VolumeNodeResources) DeepCopyInto(out *VolumeNodeResources) {
+	*out = *in
+	if in.Count != nil {
+		in, out := &in.Count, &out.Count
+		*out = new(int32)
+		**out = **in
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new VolumeNodeResources.
+func (in *VolumeNodeResources) DeepCopy() *VolumeNodeResources {
+	if in == nil {
+		return nil
+	}
+	out := new(VolumeNodeResources)
+	in.DeepCopyInto(out)
+	return out
+}