Feature 10911-Vertical scaling of VM instances from OSM

Added implementation code for Vertical Scaling of VDUs in OSM NBI.

Change-Id: I13a30ec3da9eccaf04219023f33ec0a6e6061f0e
Signed-off-by: govindarajul <Jayaprakash.g@tataelxsi.co.in>
diff --git a/osm_nbi/instance_topics.py b/osm_nbi/instance_topics.py
index 62df4f8..57c7232 100644
--- a/osm_nbi/instance_topics.py
+++ b/osm_nbi/instance_topics.py
@@ -30,6 +30,7 @@
     ns_heal,
     nsi_instantiate,
     ns_migrate,
+    ns_verticalscale,
 )
 from osm_nbi.base_topic import (
     BaseTopic,
@@ -1167,6 +1168,7 @@
         "heal": ns_heal,
         "terminate": ns_terminate,
         "migrate": ns_migrate,
+        "verticalscale": ns_verticalscale,
     }
 
     def __init__(self, db, fs, msg, auth):