Fix robot cases due to attachment-point

Change-Id: I36ad6450b7a600f09d600913cd27efafcab690bd
Issue-ID: INT-1097
Signed-off-by: Marcin Migdal <marcin.migdal@nokia.com>
diff --git a/tests/dcaegen2/prh-testcases/assets/ves-event-with-empty-attachment-point/expected-pnf-ready-event.json b/tests/dcaegen2/prh-testcases/assets/ves-event-with-empty-attachment-point/expected-pnf-ready-event.json
index d2cf954..363ff3f 100644
--- a/tests/dcaegen2/prh-testcases/assets/ves-event-with-empty-attachment-point/expected-pnf-ready-event.json
+++ b/tests/dcaegen2/prh-testcases/assets/ves-event-with-empty-attachment-point/expected-pnf-ready-event.json
@@ -1,7 +1,7 @@
 [
   {
     "additionalFields": {
-      "attachmentPoint": ""
+      "attachment-point": ""
     },
     "correlationId": "NOK6061ZW8"
   }