Placed API and implementation into separate packages

Change-Id: If8a9223a7a225db1b2aa2d09738857af482736bc
diff --git a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeCheckCommand.java b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeCheckCommand.java
index 998738c..d6224fb 100644
--- a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeCheckCommand.java
+++ b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/CordVtnNodeCheckCommand.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.CordVtnNode;
-import org.onosproject.cordvtn.CordVtnNodeManager;
+import org.onosproject.cordvtn.api.CordVtnNode;
+import org.onosproject.cordvtn.impl.CordVtnNodeManager;
 
 /**
  * Checks detailed node init state.