Less verbosity in test execution

[wadoon]

Description

The verbosity during the test cases on stdout/stderr should be reduced. Currently all everything up to "DEBUG" is reported.

Logging (incl. JUnit messages) should written into a file, which is then also provided as an artifact, e.g., build/reports/test/<xxx>/log.txt.

See the section in the JUnit documentation to achieve this (last sentence of section).

On stdout, only summaries and faling test cases should printed.

What is your expected behavior and what was the actual behavior?

Less cluttering of stdout.