Restructured api to multiple packages

Change-Id: I8a3bb2297ef55fa7749bb312b01a4929d1b360f6
diff --git a/src/main/java/org/opencord/cordvtn/codec/ServicePortCodec.java b/src/main/java/org/opencord/cordvtn/codec/ServicePortCodec.java
index 91681d0..9630ee8 100644
--- a/src/main/java/org/opencord/cordvtn/codec/ServicePortCodec.java
+++ b/src/main/java/org/opencord/cordvtn/codec/ServicePortCodec.java
@@ -23,9 +23,9 @@
 import org.onlab.packet.VlanId;
 import org.onosproject.codec.CodecContext;
 import org.onosproject.codec.JsonCodec;
-import org.opencord.cordvtn.api.AddressPair;
-import org.opencord.cordvtn.api.PortId;
-import org.opencord.cordvtn.api.ServicePort;
+import org.opencord.cordvtn.api.net.AddressPair;
+import org.opencord.cordvtn.api.net.PortId;
+import org.opencord.cordvtn.api.net.ServicePort;
 
 import java.util.Set;