Set the this manager as a host manager for the manager in *addr*.

        This is a managing function for
        :py:meth:`~creamas.mp.MultiEnvironment.set_host_manager`.

async def set_as_host_manager(self, addr, timeout=5):
        """Set the this manager as a host manager for the manager in *addr*.

        This is a managing function for
        :py:meth:`~creamas.mp.MultiEnvironment.set_host_manager`.
        """
        return await self.menv.set_host_manager(addr, timeout=timeout)