Fix bug 2092 to update params of delete_vminstance in all VIM connectors

Change-Id: I906817cc8443d958ef295835af440268528912f3
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py b/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py
index 5a937d6..df8914b 100644
--- a/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py
+++ b/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py
@@ -948,7 +948,7 @@
         except Exception as e:
             self.format_vimconn_exception(e)
 
-    def delete_vminstance(self, vm_id, created_items=None, volumes_2hold=None):
+    def delete_vminstance(self, vm_id, created_items=None, volumes_to_hold=None):
         """Removes a VM instance from VIM
         Returns the instance identifier"""
         try: