allow ns_action over a vdu

Change-Id: I093bf9a8175e9bbc448735df12c918f23937ff94
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/osm_nbi/validation.py b/osm_nbi/validation.py
index 29c069b..7cf9d1c 100644
--- a/osm_nbi/validation.py
+++ b/osm_nbi/validation.py
@@ -227,6 +227,7 @@
     "properties": {
         "member_vnf_index": name_schema,
         "vnf_member_index": name_schema,  # TODO for backward compatibility. To remove in future
+        "vdu_id": name_schema,
         "primitive": name_schema,
         "primitive_params": {"type": "object"},
     },