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/nbi.py b/osm_nbi/nbi.py
index de48c03..d78379f 100644
--- a/osm_nbi/nbi.py
+++ b/osm_nbi/nbi.py
@@ -461,6 +461,10 @@
                         "METHODS": ("POST",),
                         "ROLE_PERMISSION": "ns_instances:id:update:",
                     },
+                    "verticalscale": {
+                        "METHODS": ("POST",),
+                        "ROLE_PERMISSION": "ns_instances:id:verticalscale:"
+                           },
                 },
             },
             "ns_lcm_op_occs": {