Add unit tests in OpenstackNetworkingUtil class

Change-Id: Iadae6a52b22b7e36e4149fa0838bd245f2e5a96d
diff --git a/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/codec/OpenstackAuthCodec.java b/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/codec/OpenstackAuthCodec.java
index 5556d9c..35e806d 100644
--- a/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/codec/OpenstackAuthCodec.java
+++ b/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/codec/OpenstackAuthCodec.java
@@ -19,7 +19,7 @@
 import org.onosproject.codec.CodecContext;
 import org.onosproject.codec.JsonCodec;
 import org.onosproject.openstacknode.api.OpenstackAuth;
-import org.onosproject.openstacknode.impl.DefaultOpenstackAuth;
+import org.onosproject.openstacknode.api.DefaultOpenstackAuth;
 import org.slf4j.Logger;
 
 import static com.google.common.base.Preconditions.checkNotNull;