Adding route blackhole

Change-Id: I70212b0ab91e628e8528bca896c3aecc499e31b1
diff --git a/app/src/test/resources/app.json b/app/src/test/resources/app.json
index dab6384..2e59b0d 100644
--- a/app/src/test/resources/app.json
+++ b/app/src/test/resources/app.json
@@ -14,5 +14,8 @@
   "suppressHostByProvider" : [
       "org.onosproject.provider.host",
       "org.onosproject.netcfghost"
+  ],
+  "blackholeIps": [
+    "10.0.0.0/8"
   ]
 }