We momentarily needed to revert back to using the Scala test JUnit XML reporter, and disabling the default SBT one, due to the lack of a required field. This field will be present again with SBT 1.2.0 (see https://github.com/sbt/sbt/pull/4154 for more info), so once we upgrade to it, we should be able to simplify our build again.
Search for all references to this ticket for things to remove. (Jenkinsfile, build.sbt)
After switching back, double check to make sure that both integration and unit test results are captured by Jenkins.