init two services

Change-Id: If45b9324a4a4e96e854bc794ae1356a4b7b3230f
diff --git a/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java b/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java
index 35c3eaa..5810d25 100644
--- a/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java
+++ b/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java
@@ -202,6 +202,8 @@
 
         controllerRegistryService = context
                 .getServiceImpl(IControllerRegistryService.class);
+        pathRuntime = context.getServiceImpl(IPathCalcRuntimeService.class);
+        linkDiscoveryService = context.getServiceImpl(ILinkDiscoveryService.class);
 
         intentIdGenerator = new IdBlockAllocatorBasedIntentIdGenerator(
                 controllerRegistryService);