Removed the setServiceDirectory() method from the base web resource

This is a testing only API and potentially dangerous to allow to be public.
I modified the tests that use it to set the value using TestUtils.setField()

Change-Id: Ic590f4641f4e3de208dffa16b3df9a9a2106114b
diff --git a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkIntentManagerTest.java b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkIntentManagerTest.java
index 9d6e547..c7d21cc 100644
--- a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkIntentManagerTest.java
+++ b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkIntentManagerTest.java
@@ -25,7 +25,6 @@
 import org.onlab.junit.TestUtils;
 import org.onlab.osgi.ServiceDirectory;
 import org.onlab.osgi.TestServiceDirectory;
-import org.onlab.rest.BaseResource;
 import org.onosproject.TestApplicationId;
 import org.onosproject.common.event.impl.TestEventDispatcher;
 import org.onosproject.core.ApplicationId;
@@ -76,7 +75,10 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicLong;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 /**
  * Junit tests for VirtualNetworkIntentService.
@@ -149,7 +151,6 @@
                 .add(VirtualNetworkStore.class, virtualNetworkManagerStore)
                 .add(IntentService.class, intentService)
                 .add(WorkPartitionService.class, workPartitionService);
-        BaseResource.setServiceDirectory(testDirectory);
         TestUtils.setField(manager, "serviceDirectory", testDirectory);
 
         manager.activate();