retval := map[string]string{}

	// All configs in all namespaces that are Istio revisioned
	configMaps, err := client.Kube().CoreV1().ConfigMaps("").List(ctx, metav1.ListOptions{LabelSelector: label.IoIstioRev.Name})
	if err != nil {
		return retval, err
	}

	for _, configMap := range configMaps.Items {
		image := injection.GetIstioProxyImage(&configMap)
		if image != "" {