Add GossipLinkStoreTest

Change-Id: If3d9777583a38d911b19bb1bc50212ccb621918a
diff --git a/core/store/trivial/src/test/java/org/onlab/onos/store/trivial/impl/SimpleLinkStoreTest.java b/core/store/trivial/src/test/java/org/onlab/onos/store/trivial/impl/SimpleLinkStoreTest.java
index 043cff3..735f99c 100644
--- a/core/store/trivial/src/test/java/org/onlab/onos/store/trivial/impl/SimpleLinkStoreTest.java
+++ b/core/store/trivial/src/test/java/org/onlab/onos/store/trivial/impl/SimpleLinkStoreTest.java
@@ -16,6 +16,7 @@
 package org.onlab.onos.store.trivial.impl;
 
 import com.google.common.collect.Iterables;
+
 import org.junit.After;
 import org.junit.AfterClass;
 import org.junit.Before;
@@ -46,7 +47,7 @@
 import static org.onlab.onos.net.DeviceId.deviceId;
 import static org.onlab.onos.net.Link.Type.*;
 import static org.onlab.onos.net.link.LinkEvent.Type.*;
-import static org.onlab.onos.store.trivial.impl.SimpleDeviceStoreTest.assertAnnotationsEquals;
+import static org.onlab.onos.net.NetTestTools.assertAnnotationsEquals;
 
 /**
  * Test of the simple LinkStore implementation.