Ian Wienand 26a7a2c827 Use statsd pipeline
With a few volumes, stats tend to go missing as there's a big flood of
individual packets.  Use the statsd pipeline which is meant for this
sort of batch reporting.

Test-case is updated to handle the batched messages which are
delineated by newlines.
2018-06-05 09:58:52 +10:00
..
2018-06-05 09:58:52 +10:00
2018-06-05 09:58:52 +10:00