change nstdId to nstId

Change-Id: Ic699a950aa0063ff33e4b9b61624fcfe0364ae57
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/osm_nbi/validation.py b/osm_nbi/validation.py
index f6b93a5..f0b8054 100644
--- a/osm_nbi/validation.py
+++ b/osm_nbi/validation.py
@@ -584,7 +584,7 @@
         "nsiInstanceId": id_schema,
         "nsiName": name_schema,
         "nsiDescription": {"oneOf": [description_schema, {"type": "null"}]},
-        "nstdId": string_schema,
+        "nstId": string_schema,
         "vimAccountId": id_schema,
         "ssh_keys": {"type": "string"},
         "nsi_id": id_schema,
@@ -594,7 +594,7 @@
             "items": ns_instantiate
         },
     },
-    "required": ["nsiName", "nstdId", "vimAccountId"],
+    "required": ["nsiName", "nstId", "vimAccountId"], 
     "additionalProperties": False
 }