chaos: allow packet_capture host selection

Push the capture_host argument through to the control file.

BUG=None
TEST=run_remote_tests.sh network_WiFiChaosPSK/control.debug

Change-Id: I8ef954a012dd73df3c16d3b72bbf3c365ff0eb8f
Signed-off-by: Jason Abele <jabele@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/66203
2 files changed