generate cpms when the TechPreviewNoUpgrade feature set is enabled

Author: rvanderp3

pkg/asset/machines/master.go

@@ -477,6 +477,11 @@ func (m *Master) Generate(dependencies asset.Parents) error {
 		if err != nil {
 			return errors.Wrap(err, "failed to create master machine objects")
 		}
+
+		if ic.FeatureSet != configv1.TechPreviewNoUpgrade {
+			controlPlaneMachineSet = nil
+		}
+
 		vsphere.ConfigMasters(machines, clusterID.InfraID)
 	case powervstypes.Name:
 		mpool := defaultPowerVSMachinePoolPlatform()