Remove NsState from VNF record

Change-Id: I291b37573f5b6b67daf1f4db416922d70cf019e7
Signed-off-by: Patricia Reinoso <patricia.reinoso@canonical.com>
diff --git a/osm_nbi/instance_topics.py b/osm_nbi/instance_topics.py
index c2cd9dd..060e056 100644
--- a/osm_nbi/instance_topics.py
+++ b/osm_nbi/instance_topics.py
@@ -414,7 +414,7 @@
         rollback.append({"topic": "nsrs", "_id": nsr_descriptor["id"]})
 
     def _add_vnfr_to_db(self, vnfr_descriptor, rollback, session):
-        self.format_on_new(
+        BaseTopic.format_on_new(
             vnfr_descriptor, session["project_id"], make_public=session["public"]
         )
         self.db.create("vnfrs", vnfr_descriptor)