Various fixes:

- Adds the support for the filter obj of AppConfigHandler;
- Fixes NPE on ICMP handler when rcving a packet from not configured ntw;

Change-Id: I44b90420429ca05927426bdf9a9ce4b78846b566
diff --git a/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java b/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
index 55562e0..6ceeb4b 100644
--- a/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
+++ b/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
@@ -158,9 +158,7 @@
                     });
                 }
             });
-            /*
-             * We register the connect point with the NRS.
-             */
+            // We register the connect point with the NRS.
             srManager.registerConnectPoint(subject);
         });
     }