Placed API and implementation into separate packages

Change-Id: If8a9223a7a225db1b2aa2d09738857af482736bc
diff --git a/src/main/java/org/onosproject/cordvtn/rest/NeutronMl2PortsWebResource.java b/src/main/java/org/onosproject/cordvtn/rest/NeutronMl2PortsWebResource.java
index 2ceb13c..1d29594 100644
--- a/src/main/java/org/onosproject/cordvtn/rest/NeutronMl2PortsWebResource.java
+++ b/src/main/java/org/onosproject/cordvtn/rest/NeutronMl2PortsWebResource.java
@@ -20,7 +20,7 @@
 import com.google.common.collect.Maps;
 import org.onlab.packet.IpAddress;
 import org.onlab.packet.MacAddress;
-import org.onosproject.cordvtn.CordVtnService;
+import org.onosproject.cordvtn.api.CordVtnService;
 import org.onosproject.net.HostId;
 import org.onosproject.rest.AbstractWebResource;
 import org.slf4j.Logger;