The JUnit reporter was initially named xunit, but the naming was inaccurate
and the reporter was renamed in 27db9e458c.
The corresponding test has now been renamed as well, and as an added bonus
we only run it for that reporter.
Pick-to: 6.2
Change-Id: I59cb7d949514cdf46a0199a53a7a3e39f833207c
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>