Refactor: move LCAF related address classes under lcaf package

Change-Id: I828fe5596c84b121b9382a69107ddfce20840f99
diff --git a/protocols/lisp/ctl/src/main/java/org/onosproject/lisp/ctl/impl/LispMapServer.java b/protocols/lisp/ctl/src/main/java/org/onosproject/lisp/ctl/impl/LispMapServer.java
index faac48d..5e4d35a 100644
--- a/protocols/lisp/ctl/src/main/java/org/onosproject/lisp/ctl/impl/LispMapServer.java
+++ b/protocols/lisp/ctl/src/main/java/org/onosproject/lisp/ctl/impl/LispMapServer.java
@@ -34,7 +34,7 @@
 import org.onosproject.lisp.msg.types.LispAfiAddress;
 import org.onosproject.lisp.msg.types.LispIpv4Address;
 import org.onosproject.lisp.msg.types.LispIpv6Address;
-import org.onosproject.lisp.msg.types.LispNatLcafAddress.NatAddressBuilder;
+import org.onosproject.lisp.msg.types.lcaf.LispNatLcafAddress.NatAddressBuilder;
 import org.onosproject.lisp.msg.types.LispNoAddress;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;