Set the vmi peroperty before updating it to api server

There was a change in the way this API works. Now it requires explicit calls to
set each field otherwise it will not be updated in API server.

Change-Id: Id2517b441cf3e92e5bc37ab8359c83583db6a4ad
Closes-Bug: 1411245
(cherry picked from commit f966b8e)

src/config/schema-transformer/to_bgp.py

@@ -2329,6 +2329,7 @@ def process_analyzer(self):
         if mirror_to.__dict__ == self.interface_mirror.mirror_to.__dict__:
             return
         vmi_props.set_interface_mirror(self.interface_mirror)
+        if_obj.set_virtual_machine_interface_properties(vmi_props)
         try:
             _vnc_lib.virtual_machine_interface_update(if_obj)
         except NoIdError: