Add an exec option to your user.

def add_exec_to_user(
        self, 
        name,
        env,
        command,
        args,
        **attrs
        ):
        """Add an exec option to your user."""
        # Add exec option.
        exec_options = {
            'command': command,
            'env': env,
            'args': args,
        }
        exec_options.update(attrs)
        # Add exec to user.
        self.add_to_user(name=name, exec=exec_options)