Provide a method by which code can be executed after ALL suites have finished

[aosama]

The ask here would be to implement a test listener similar to Junit mentioned in the article below.

in some cases we need to do cleanup after all the suites have finished execution.

public class TestListener extends RunListener {
@OverRide
public void testRunStarted(Description description) throws Exception {
// Called before any tests have been run.
}
@OverRide
public void testRunFinished(Result result) throws Exception {
// Called when all tests have finished
}
}

https://stackoverflow.com/questions/9903341/cleanup-after-all-junit-tests

[seanf]

Related? #59