Refactor: move default model implementation from app to api

Change-Id: Icfc6c2a4831abbcf28642ee95305415b3f08e6f5
diff --git a/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DistributedOpenstackNodeStore.java b/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DistributedOpenstackNodeStore.java
index 571890b..92de9eb 100644
--- a/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DistributedOpenstackNodeStore.java
+++ b/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DistributedOpenstackNodeStore.java
@@ -26,10 +26,14 @@
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
 import org.onosproject.net.behaviour.ControllerInfo;
+import org.onosproject.openstacknode.api.DefaultDpdkConfig;
+import org.onosproject.openstacknode.api.DefaultDpdkInterface;
 import org.onosproject.openstacknode.api.DefaultKeystoneConfig;
 import org.onosproject.openstacknode.api.DefaultNeutronConfig;
 import org.onosproject.openstacknode.api.DefaultOpenstackAuth;
 import org.onosproject.openstacknode.api.DefaultOpenstackNode;
+import org.onosproject.openstacknode.api.DefaultOpenstackPhyInterface;
+import org.onosproject.openstacknode.api.DefaultOpenstackSshAuth;
 import org.onosproject.openstacknode.api.DpdkConfig;
 import org.onosproject.openstacknode.api.DpdkInterface;
 import org.onosproject.openstacknode.api.NodeState;