Refactor: make query methods visible in OpenStackRouterAdminService

Change-Id: I1b08bba03ca256fc2d75ad2574df33bb2a42786a
diff --git a/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterAdminService.java b/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterAdminService.java
index 8742079..d511521 100644
--- a/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterAdminService.java
+++ b/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterAdminService.java
@@ -22,7 +22,7 @@
 /**
  * Service for administering the inventory of OpenStack router and floating IP.
  */
-public interface OpenstackRouterAdminService {
+public interface OpenstackRouterAdminService extends OpenstackRouterService {
 
     /**
      * Creates a router with the given information.