Restructured api to multiple packages

Change-Id: I8a3bb2297ef55fa7749bb312b01a4929d1b360f6
diff --git a/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java b/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java
index ff43f93..b1858a3 100644
--- a/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java
+++ b/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java
@@ -36,13 +36,13 @@
 import org.onosproject.net.behaviour.TunnelKeys;
 import org.onosproject.net.config.ConfigFactory;
 import org.onosproject.net.config.basics.SubjectFactories;
-import org.opencord.cordvtn.api.ConnectionHandler;
-import org.opencord.cordvtn.api.CordVtnConfig;
-import org.opencord.cordvtn.api.CordVtnNode;
-import org.opencord.cordvtn.api.CordVtnNodeState;
-import org.opencord.cordvtn.api.InstanceService;
-import org.opencord.cordvtn.api.NetworkAddress;
-import org.opencord.cordvtn.api.SshAccessInfo;
+import org.opencord.cordvtn.api.node.ConnectionHandler;
+import org.opencord.cordvtn.api.config.CordVtnConfig;
+import org.opencord.cordvtn.api.node.CordVtnNode;
+import org.opencord.cordvtn.api.node.CordVtnNodeState;
+import org.opencord.cordvtn.api.instance.InstanceService;
+import org.opencord.cordvtn.api.node.NetworkAddress;
+import org.opencord.cordvtn.api.node.SshAccessInfo;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
 import org.onosproject.net.ConnectPoint;