Imports istio.io/istio/istioctl/pkg/util/proto istio.io/istio/istioctl/pkg/util/clusters github.com/envoyproxy/go-control-plane/envoy/admin/v2alpha github.com/envoyproxy/go-control-plane/envoy/api/v2/core Standard library imports encoding/json fmt io sort strconv strings text/tabwriter