Restructured api to multiple packages

Change-Id: I8a3bb2297ef55fa7749bb312b01a4929d1b360f6
diff --git a/src/main/java/org/opencord/cordvtn/impl/CordVtnArpProxy.java b/src/main/java/org/opencord/cordvtn/impl/CordVtnArpProxy.java
index 15269dd..c2e2a62 100644
--- a/src/main/java/org/opencord/cordvtn/impl/CordVtnArpProxy.java
+++ b/src/main/java/org/opencord/cordvtn/impl/CordVtnArpProxy.java
@@ -34,8 +34,8 @@
 import org.onosproject.net.config.NetworkConfigListener;
 import org.onosproject.net.config.NetworkConfigRegistry;
 import org.onosproject.net.packet.PacketProcessor;
-import org.opencord.cordvtn.api.CordVtnConfig;
-import org.opencord.cordvtn.api.Instance;
+import org.opencord.cordvtn.api.config.CordVtnConfig;
+import org.opencord.cordvtn.api.instance.Instance;
 import org.onosproject.net.Host;
 import org.onosproject.net.flow.DefaultTrafficSelector;
 import org.onosproject.net.flow.DefaultTrafficTreatment;
@@ -45,7 +45,7 @@
 import org.onosproject.net.packet.PacketContext;
 import org.onosproject.net.packet.PacketPriority;
 import org.onosproject.net.packet.PacketService;
-import org.opencord.cordvtn.api.VtnNetwork;
+import org.opencord.cordvtn.api.net.VtnNetwork;
 import org.opencord.cordvtn.impl.handler.AbstractInstanceHandler;
 import org.slf4j.Logger;
 
@@ -55,7 +55,7 @@
 import java.util.Set;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-import static org.opencord.cordvtn.api.ServiceNetwork.ServiceNetworkType.*;
+import static org.opencord.cordvtn.api.net.ServiceNetwork.ServiceNetworkType.*;
 import static org.slf4j.LoggerFactory.getLogger;
 
 /**