Increase timeout for benchtest (#25487)
Increase timeout for benchtest (#25487)

* Increase timeout for benchtest

Sometimes it goes too long:
https://storage.googleapis.com/istio-prow/logs/benchmark-report_istio_postsubmit/40/artifacts/benchmark-log.txt

* fix lint
istio/istio,istio/istio,istio/istio,istio/istio,istio/istio