Revert "Mark v1a2 VirtualMachineClass as namespace scoped"

This reverts commit 25b6933.

While apparently very biased towards v1a1, the controller-gen manifest
output is not deterministic. Since this change was just for
informational purposes - the Scope field is fixed up later - revert
this change.

api/v1alpha2/virtualmachineclass_types.go

@@ -244,7 +244,7 @@ type VirtualMachineClassStatus struct {
 }
 
 // +kubebuilder:object:root=true
-// +kubebuilder:resource:scope=Namespaced,shortName=vmclass
+// +kubebuilder:resource:scope=Cluster,shortName=vmclass
 // +kubebuilder:storageversion
 // +kubebuilder:subresource:status
 // +kubebuilder:printcolumn:name="CPU",type="string",JSONPath=".spec.hardware.cpus"