Feature 10910: Migration of Openstack based VM instances

Added feature support for Migration of Openstack based VM instances
from OSM

Change-Id: I1e16c3ba323d284c30e4761aec614b18119691af
Signed-off-by: elumalai <deepika.e@tataelxsi.co.in>
diff --git a/RO-VIM-openvim/osm_rovim_openvim/vimconn_openvim.py b/RO-VIM-openvim/osm_rovim_openvim/vimconn_openvim.py
index e88cecc..a580800 100644
--- a/RO-VIM-openvim/osm_rovim_openvim/vimconn_openvim.py
+++ b/RO-VIM-openvim/osm_rovim_openvim/vimconn_openvim.py
@@ -1634,3 +1634,13 @@
             )
             print(text)
             return -vim_response.status_code, text
+
+    def migrate_instance(self, vm_id, compute_host=None):
+        """
+        Migrate a vdu
+        param:
+            vm_id: ID of an instance
+            compute_host: Host to migrate the vdu to
+        """
+        # TODO: Add support for migration
+        raise vimconn.VimConnNotImplemented("Not implemented")