Avoid a 1s statsd delay on app restart
Avoid a 1s statsd delay on app restart

The previous commit would block restarts for 1s waiting for `nc` to
exit. This trick cribbed from something Phil did not block at all.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet