fix 1008 wim_account create issue

Change-Id: Iddc270db6687a7405ea7295bf7256a77a3bde532
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/RO/osm_ro/wim/persistence.py b/RO/osm_ro/wim/persistence.py
index 32a46b3..d395bfc 100644
--- a/RO/osm_ro/wim/persistence.py
+++ b/RO/osm_ro/wim/persistence.py
@@ -864,9 +864,7 @@
     """
     wim_account = preprocess_record(wim_account)
 
-    created = wim_account.get('created')
-    wim_account['created'] = (
-        'true' if created is True or created == 'true' else 'false')
+    wim_account['sdn'] = False
 
     return wim_account