Not able to produce test coverage report

[pavelhoral]

Surefire's argLine configuration prevents JaCoCo plugin to correctly produce coverage report data. We should move that configuration to global properties (https://www.eclemma.org/jacoco/trunk/doc/prepare-agent-mojo.html).

Running mvn -Pmetrics test jacoco:report has to produce coverage report.

[pavelhoral]

This is issue in opendj-server-legacy module as well where Failsafe is used to run unit tests.