[ODTN]Update create-connectivity.json

According to the definition of tapi-connectivity@2018-10-16.yang, 
"conn-constraint" and "topo-constraint" have been changed to 
"connectivity-constraint" and "topology-constraint".

Change-Id: I08a59f18db8bff6b76e37ebccd4c5fdd9fac2897
diff --git a/apps/odtn/service/src/test/resources/create-connectivity.json b/apps/odtn/service/src/test/resources/create-connectivity.json
index 35798f4..47fd6dc 100644
--- a/apps/odtn/service/src/test/resources/create-connectivity.json
+++ b/apps/odtn/service/src/test/resources/create-connectivity.json
@@ -26,8 +26,8 @@
                 "protection-role" : "WORK"
             }
         ],
-        "conn-constraint" : {},
-        "topo-constraint" : {},
+        "connectivity-constraint" : {},
+        "topology-constraint" : {},
         "resilience-constraint" : [ ]
     }
 }