"istio.io/istio/pkg/cmd"
	"istio.io/istio/pkg/collateral"
	"istio.io/istio/pkg/ctrlz"
	"istio.io/istio/pkg/env"
	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/version"
	iptables "istio.io/istio/tools/istio-iptables/pkg/constants"
)

var (
	logOptions   = log.DefaultOptions()
	ctrlzOptions = func() *ctrlz.Options {
		o := ctrlz.DefaultOptions()
		o.EnablePprof = true
		return o
	}()
)

    an alternative to accepting a `callable` loss.
*   Adds `beta` hyperparameter to
    [FTRL](https://www.tensorflow.org/api_docs/python/tf/keras/optimizers/Ftrl)
    optimizer classes (Keras and others) to match
    [FTRL paper](https://research.google.com/pubs/archive/41159.pdf).
*   `Optimizer.__init__` now accepts a `gradient_aggregator` to allow for

  istioctl x ztunnel-config workload <ztunnel-name[.namespace]> --address 0.0.0.0 -o json

  # Retrieve Ztunnel config dump separately and inspect from file.
  kubectl exec -it $ZTUNNEL -n istio-system -- curl localhost:15000/config_dump > ztunnel-config.json
  istioctl x ztunnel-config workloads --file ztunnel-config.json

  # Retrieve workload summary for a specific namespace