def get_tables():
    """Returns hardcoded list of tables which have ``tenant_id`` column.

    DB head can be changed. To prevent possible problems, when models will be
    updated, return hardcoded list of tables, up-to-date for this day.

    Output retrieved by using:

    >>> metadata = head.get_metadata()
    >>> all_tables = metadata.sorted_tables
    >>> tenant_tables = []
    >>> for table in all_tables:
    ...     for column in table.columns:
    ...         if column.name == 'tenant_id':
    ...             tenant_tables.append((table, column))

    """
    tables = ['address_scopes', 'floatingips', 'meteringlabels',
        'networkrbacs', 'networks', 'ports', 'qos_policies',
        'qospolicyrbacs', 'quotas', 'reservations', 'routers',
        'securitygrouprules', 'securitygroups', 'subnetpools', 'subnets',
        'trunks', 'auto_allocated_topologies', 'default_security_group',
        'ha_router_networks', 'quotausages']
    return tables
