Made time limit for event processing configurable; cleaned-up duplicate code.

Change-Id: I08e7f1c9f4cdbd6404f1eb5e3544989e7a728d92
diff --git a/core/net/src/test/java/org/onosproject/net/group/impl/GroupManagerTest.java b/core/net/src/test/java/org/onosproject/net/group/impl/GroupManagerTest.java
index 6b5929a..43ce78a 100644
--- a/core/net/src/test/java/org/onosproject/net/group/impl/GroupManagerTest.java
+++ b/core/net/src/test/java/org/onosproject/net/group/impl/GroupManagerTest.java
@@ -35,7 +35,7 @@
 import org.onosproject.core.DefaultApplicationId;
 import org.onosproject.core.DefaultGroupId;
 import org.onosproject.core.GroupId;
-import org.onosproject.event.impl.TestEventDispatcher;
+import org.onosproject.common.event.impl.TestEventDispatcher;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.PortNumber;
 import org.onosproject.net.device.impl.DeviceManager;