AutoTest: Enhance reporting passes and fails

Depending on the report and log level of Boost UTF
the number of test passes and fails might be wrong.
Circumvent by providing a way to report a summary.

Change-Id: I6d2cb7674550f10a0263e08d21cce42569f3d7a8
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/autotest/testrunner.h

@@ -71,6 +71,7 @@ signals:
     void requestStopTestRun();
     void testResultReady(const TestResultPtr &result);
     void hadDisabledTests(int disabled);
+    void reportSummary(const QString &id, const QHash<ResultType, int> &summary);
 
 private:
     void buildProject(ProjectExplorer::Project *project);