ONOS-2197 Enabling Cofiguration Services to be used in DHCP App.

Change-Id: I259d253c647253abf6046a60ee1f13f34c08acd1
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/config/NetworkConfigRegistry.java b/incubator/api/src/main/java/org/onosproject/incubator/net/config/NetworkConfigRegistry.java
index 727d05a..1e24f4a 100644
--- a/incubator/api/src/main/java/org/onosproject/incubator/net/config/NetworkConfigRegistry.java
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/config/NetworkConfigRegistry.java
@@ -27,7 +27,7 @@
  * treated.
  */
 @Beta
-public interface NetworkConfigRegistry {
+public interface NetworkConfigRegistry extends NetworkConfigService {
 
     /**
      * Registers the specified configuration factory.