Do not return error if secret does not exist

The non existence of the bootstrap secret should not prevent an awsMachine from being deleted

Author: enxebre

controllers/awsmachine_controller.go

@@ -763,7 +763,7 @@ func (r *AWSMachineReconciler) deleteIgnitionBootstrapDataFromS3(machineScope *s
 	}
 
 	_, userDataFormat, err := machineScope.GetRawBootstrapDataWithFormat()
-	if err != nil {
+	if err != nil && !apierrors.IsNotFound(err) {
 		r.Recorder.Eventf(machineScope.AWSMachine, corev1.EventTypeWarning, "FailedGetBootstrapData", err.Error())
 		return err
 	}