'Add a security group to the server.
For a full list of available parameters, please refer to the official
API reference:
https://developer.openstack.org/api-ref/compute/#add-security-group-to-a-server-addsecuritygroup-action'

def add_security_group(self, server_id, **kwargs):

    return self.action(server_id, 'addSecurityGroup', **kwargs)
