ONOS-6886 Move interface classes from incubator to core

Change-Id: Iaae4d98279e4b77fc3f0b5a63d547921f93aeb46
diff --git a/apps/vpls/src/main/java/org/onosproject/vpls/api/VplsData.java b/apps/vpls/src/main/java/org/onosproject/vpls/api/VplsData.java
index 03a2ea7..a4f7093 100644
--- a/apps/vpls/src/main/java/org/onosproject/vpls/api/VplsData.java
+++ b/apps/vpls/src/main/java/org/onosproject/vpls/api/VplsData.java
@@ -19,7 +19,7 @@
 import com.google.common.base.MoreObjects;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
-import org.onosproject.incubator.net.intf.Interface;
+import org.onosproject.net.intf.Interface;
 import org.onosproject.net.EncapsulationType;
 
 import java.util.Collection;