Add support to run JUnit-Tests in an OSGi-Env

[tomsontom]

No description provided.

[kenwenzel]

Something simple like https://github.com/eclipse/eclipse.pde.ui/tree/master/ui/org.eclipse.pde.junit.runtime
could work here.

I would suggest to create an OSGi component that loads and executes JUnit tests like org.eclipse.pde.junit.runtime does. This component is simply installed as additional bundle by the osgi-exec plugin.

[kenwenzel]

We should research if this functionality is really required since bnd-testing-maven-plugin already implements this.