Bump github.com/newrelic/go-agent (#294)

Bumps [github.com/newrelic/go-agent](https://github.com/newrelic/go-agent) from 2.15.0+incompatible to 2.16.3+incompatible.
- [Release notes](https://github.com/newrelic/go-agent/releases)
- [Changelog](https://github.com/newrelic/go-agent/blob/master/CHANGELOG.md)
- [Commits](https://github.com/newrelic/go-agent/compare/v2.15.0...v2.16.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -18,7 +18,7 @@ require (
 	github.com/honeybadger-io/honeybadger-go v0.5.0
 	github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 // indirect
 	github.com/matoous/go-nanoid v0.0.0-20181114085210-eab626deece6
-	github.com/newrelic/go-agent v2.15.0+incompatible
+	github.com/newrelic/go-agent v2.16.3+incompatible
 	github.com/prometheus/client_golang v0.9.4
 	github.com/sirupsen/logrus v1.4.2
 	github.com/stretchr/testify v1.4.0

go.sum

@@ -190,6 +190,8 @@ github.com/nats-io/nkeys v0.0.2/go.mod h1:dab7URMsZm6Z/jp9Z5UGa87Uutgc2mVpXLC4B7
 github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
 github.com/newrelic/go-agent v2.15.0+incompatible h1:IB0Fy+dClpBq9aEoIrLyQXzU34JyI1xVTanPLB/+jvU=
 github.com/newrelic/go-agent v2.15.0+incompatible/go.mod h1:a8Fv1b/fYhFSReoTU6HDkTYIMZeSVNffmoS726Y0LzQ=
+github.com/newrelic/go-agent v2.16.3+incompatible h1:zUa8iVlvIin2KcB43lyZ5RCMwcyQCthdkpyGziIMBqM=
+github.com/newrelic/go-agent v2.16.3+incompatible/go.mod h1:a8Fv1b/fYhFSReoTU6HDkTYIMZeSVNffmoS726Y0LzQ=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.10.3/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=