Added SourceVolumeMode field to v1 spec in VolumeSnapshotContents API.

Update code-gen to v0.23.4 and controller-gen to v0.8.0

client/apis/volumesnapshot/v1/zz_generated.deepcopy.go

@@ -2,7 +2,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2020 The Kubernetes Authors.
+Copyright 2022 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -224,6 +224,11 @@ func (in *VolumeSnapshotContentSpec) DeepCopyInto(out *VolumeSnapshotContentSpec
 		**out = **in
 	}
 	in.Source.DeepCopyInto(&out.Source)
+	if in.SourceVolumeMode != nil {
+		in, out := &in.SourceVolumeMode, &out.SourceVolumeMode
+		*out = new(SourceVolumeMode)
+		**out = **in
+	}
 	return
 }