Benp/new relic s3 agent

@mulby @brianhw @e0d

Even if we end up going with a different solution, this would be the first we roll out with. Please have a look?


Hmm I haven't gone without them. They are from the new relic plugin boilerplate. See here: https://github.com/newrelic-platform/newrelic_example_plugin/blob/master/newrelic_example_agent