avoid nesting managed suites

Nesting ManagedTestSuite causes duplication in the test output and can
cause side effects with the test timeout watcher.
diff --git a/org.eclipse.mylyn.tests/src/org/eclipse/mylyn/tests/AllNonConnectorTests.java b/org.eclipse.mylyn.tests/src/org/eclipse/mylyn/tests/AllNonConnectorTests.java
index 5fd8936..1d8d4bb 100644
--- a/org.eclipse.mylyn.tests/src/org/eclipse/mylyn/tests/AllNonConnectorTests.java
+++ b/org.eclipse.mylyn.tests/src/org/eclipse/mylyn/tests/AllNonConnectorTests.java
@@ -48,7 +48,7 @@
 
 	static void addTests(TestSuite suite, TestConfiguration configuration) {
 		suite.addTest(AllIntegrationTests.suite());
-		suite.addTest(AllCommonsTests.suite());
+		suite.addTest(AllCommonsTests.suite(configuration));
 		suite.addTest(AllNotificationsTests.suite());
 		suite.addTest(AllActivityTests.suite());
 		suite.addTest(AllContextTests.suite());