Return a list of the VMs that in this location

def list_nodes_min(call=None, **kwargs):
    '''
    Return a list of the VMs that in this location
    '''
    if call == 'action':
        raise SaltCloudSystemExit(
            (
                'The list_nodes_min function must be called with'
                ' -f or --function.'
            )
        )

    conn = get_conn()
    server_list = conn.server_list_min()

    if not server_list:
        return {}
    return server_list