Bug 585 Fix for scaling

This fix should be merged with this
https://osm.etsi.org/gerrit/c/osm/N2VC/+/10364

Change-Id: I43fb4e5c81dbbaed07f01ba1a3ba399f7425b347
Signed-off-by: aktas <emin.aktas@ulakhaberlesme.com.tr>
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/osm_lcm/data_utils/vnfr.py b/osm_lcm/data_utils/vnfr.py
index 042788e..9c0b148 100644
--- a/osm_lcm/data_utils/vnfr.py
+++ b/osm_lcm/data_utils/vnfr.py
@@ -23,6 +23,7 @@
 ##
 
 from osm_lcm.data_utils import list_utils
+from osm_lcm.lcm_utils import get_iterable
 
 
 def find_VNFR_by_VDU_ID(vnfr, vdu_id):
@@ -57,3 +58,11 @@
             osm_params["vdu_id"] = vdu_id
             osm_params["count_index"] = vdu_count_index
     return osm_params
+
+
+def get_vdur_index(db_vnfr, vdu_delta):
+    vdur_list = get_iterable(db_vnfr, "vdur")
+    if vdur_list:
+        return len([x for x in vdur_list if x.get("vdu-id-ref") == vdu_delta["id"]])
+    else:
+        return 0