Upgrading app to ONOS 1.13

Change-Id: I2f94b769e738a4d12122cc34da306d01e70252d4
diff --git a/src/main/java/org/opencord/igmpproxy/IgmpManager.java b/src/main/java/org/opencord/igmpproxy/IgmpManager.java
index 99a4773..0507ec1 100644
--- a/src/main/java/org/opencord/igmpproxy/IgmpManager.java
+++ b/src/main/java/org/opencord/igmpproxy/IgmpManager.java
@@ -33,7 +33,6 @@
 import org.onlab.packet.VlanId;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
-import org.onosproject.incubator.net.config.basics.McastConfig;
 import org.onosproject.mastership.MastershipService;
 import org.onosproject.net.AnnotationKeys;
 import org.onosproject.net.ConnectPoint;
@@ -44,6 +43,7 @@
 import org.onosproject.net.config.NetworkConfigEvent;
 import org.onosproject.net.config.NetworkConfigListener;
 import org.onosproject.net.config.NetworkConfigRegistry;
+import org.onosproject.net.config.basics.McastConfig;
 import org.onosproject.net.config.basics.SubjectFactories;
 import org.onosproject.net.device.DeviceEvent;
 import org.onosproject.net.device.DeviceListener;