Fix restore size type in snapshot content

Change the restore size to int64 for snapshot content. Also add the code
to update the restore size for snapshot content.

pkg/apis/volumesnapshot/v1alpha1/types.go

@@ -114,10 +114,8 @@ type VolumeSnapshotStatus struct {
 // TODO: After TypedLocalObjectReference is merged into the in-tree core API, this will be replaced.
 type TypedLocalObjectReference struct {
 	// Name of the referent.
-	// +optional
 	Name string `json:"name,omitempty" protobuf:"bytes,1,opt,name=name"`
 	// Kind of the referent.
-	// +optional
 	Kind string `json:"kind,omitempty" protobuf:"bytes,2,opt,name=kind"`
 }
 
@@ -241,5 +239,5 @@ type CSIVolumeSnapshotSource struct {
 	// larger than the RestoreSize if it is specified. If RestoreSize is set to nil, it means
 	// that the storage plugin does not have this information available.
 	// +optional
-	RestoreSize *resource.Quantity `json:"restoreSize" protobuf:"bytes,4,opt,name=restoreSize"`
+	RestoreSize *int64 `json:"restoreSize,omitempty" protobuf:"bytes,4,opt,name=restoreSize"`
 }

pkg/apis/volumesnapshot/v1alpha1/zz_generated.deepcopy.go

@@ -36,8 +36,8 @@ func (in *CSIVolumeSnapshotSource) DeepCopyInto(out *CSIVolumeSnapshotSource) {
 	}
 	if in.RestoreSize != nil {
 		in, out := &in.RestoreSize, &out.RestoreSize
-		x := (*in).DeepCopy()
-		*out = &x
+		*out = new(int64)
+		**out = **in
 	}
 	return
 }