Extend ControlPlaneRedirect (vRouter) to allow multiple redirects

CORD-787

Change-Id: I9e5a6f74b7239eb0dcb42b52e562698ce415debc
diff --git a/apps/routing/fibinstaller/src/test/java/org/onosproject/routing/fibinstaller/FibInstallerTest.java b/apps/routing/fibinstaller/src/test/java/org/onosproject/routing/fibinstaller/FibInstallerTest.java
index e17d779..fabc94b 100644
--- a/apps/routing/fibinstaller/src/test/java/org/onosproject/routing/fibinstaller/FibInstallerTest.java
+++ b/apps/routing/fibinstaller/src/test/java/org/onosproject/routing/fibinstaller/FibInstallerTest.java
@@ -60,6 +60,7 @@
 import org.onosproject.net.host.InterfaceIpAddress;
 import org.onosproject.routing.RoutingService;
 import org.onosproject.routing.config.RouterConfig;
+import org.onosproject.routing.config.RoutersConfig;
 import org.osgi.service.component.ComponentContext;
 
 import java.util.ArrayList;
@@ -189,6 +190,8 @@
         expect(networkConfigService.getConfig(
                 anyObject(ApplicationId.class), eq(RoutingService.ROUTER_CONFIG_CLASS))).
         andReturn(routerConfig);
+        expect(networkConfigService.getConfig(anyObject(ApplicationId.class), eq(RoutersConfig.class)))
+                .andReturn(null);
         replay(networkConfigService);
     }