'Called to stop the started servers in a normal fashion. Note
that cleanup() will stop the servers using a fairly draconian
method of sending a SIGTERM signal to the servers. Here, we use
the glance-control stop method to gracefully shut the server down.
This method also asserts that the shutdown was clean, and so it
is meant to be called during a normal test case sequence.'

def stop_servers(self):

    self.stop_server(self.api_server)
    self.stop_server(self.registry_server)
    if self.include_scrubber:
        self.stop_server(self.scrubber_daemon)
    self._reset_database(self.registry_server.sql_connection)
