Placed API and implementation into separate packages

Change-Id: If8a9223a7a225db1b2aa2d09738857af482736bc
diff --git a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeDeleteCommand.java b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeDeleteCommand.java
index 0133345..c3b49e1 100644
--- a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeDeleteCommand.java
+++ b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeDeleteCommand.java
@@ -19,8 +19,8 @@
 import org.apache.karaf.shell.commands.Argument;
 import org.apache.karaf.shell.commands.Command;
 import org.onosproject.cli.AbstractShellCommand;
-import org.onosproject.cordvtn.CordVtnNodeManager;
-import org.onosproject.cordvtn.CordVtnNode;
+import org.onosproject.cordvtn.impl.CordVtnNodeManager;
+import org.onosproject.cordvtn.api.CordVtnNode;
 
 import java.util.NoSuchElementException;