The original Ant JUnit reporter only writes <system-err> and <system-out>
to the <testsuite>, but more modern reporters such as Maven Surefire
scopes output to each individual <testcase>.
This is also handled by both the Jenkins JUnit and xUnit plugins, e.g.:
https://github.com/jenkinsci/junit-plugin/commit/145eb5c98
Pick-to: 6.2
Change-Id: I20c87276004a4e0910fc18e05e6ffa0f5e5a7b7c
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
308280e7a9