"istio.io/istio/istioctl/pkg/completion"
	"istio.io/istio/istioctl/pkg/multixds"
	"istio.io/istio/istioctl/pkg/util/ambient"
	"istio.io/istio/istioctl/pkg/writer/compare"
	"istio.io/istio/istioctl/pkg/writer/pilot"
	pilotxds "istio.io/istio/pilot/pkg/xds"
	"istio.io/istio/pkg/log"
)

var configDumpFile string

func readConfigFile(filename string) ([]byte, error) {
	file := os.Stdin
	if filename != "-" {
		var err error