Make REST API unit tests choose a free port to allow concurrent builds

Change-Id: I05579d38e9374c40ef67251a30869361e31fc6d8
diff --git a/web/api/src/test/java/org/onosproject/rest/FlowsResourceTest.java b/web/api/src/test/java/org/onosproject/rest/FlowsResourceTest.java
index 8d6232e..5f52081 100644
--- a/web/api/src/test/java/org/onosproject/rest/FlowsResourceTest.java
+++ b/web/api/src/test/java/org/onosproject/rest/FlowsResourceTest.java
@@ -52,7 +52,6 @@
 import com.google.common.collect.ImmutableSet;
 import com.sun.jersey.api.client.UniformInterfaceException;
 import com.sun.jersey.api.client.WebResource;
-import com.sun.jersey.test.framework.JerseyTest;
 
 import static org.easymock.EasyMock.anyObject;
 import static org.easymock.EasyMock.createMock;
@@ -70,7 +69,7 @@
 /**
  * Unit tests for Flows REST APIs.
  */
-public class FlowsResourceTest extends JerseyTest {
+public class FlowsResourceTest extends ResourceTest {
     final FlowRuleService mockFlowService = createMock(FlowRuleService.class);
     final HashMap<DeviceId, Set<FlowEntry>> rules = new HashMap<>();
 
@@ -189,10 +188,6 @@
         }
     }
 
-    public FlowsResourceTest() {
-        super("org.onosproject.rest");
-    }
-
     /**
      * Populates some flows used as testing data.
      */