cros_ubuntu: Add iperf to Intel NUC Router install script

NetworkWifiPerf tests require the iperf package so add it to the
NUC Router install script.

BUG=b:352555358
TEST=tast run $DUT wifi.NetworkWifiPerf*

Change-Id: I8ec0620ab7a36b319896355786643e1b71eee62f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/5696985
Commit-Queue: ChromeOS Auto Runner <chromeos-auto-runner@chromeos-bot.iam.gserviceaccount.com>
Commit-Queue: Ruth Mekonnen <rmekonnen@google.com>
Tested-by: Ruth Mekonnen <rmekonnen@google.com>
Reviewed-by: Arowa Suliman <arowa@chromium.org>
1 file changed