def route_tables_list(resource_group, **kwargs):
    '''
    .. versionadded:: 2019.2.0

    List all route tables within a resource group.

    :param resource_group: The resource group name to list route
        tables within.

    CLI Example:

    .. code-block:: bash

        salt-call azurearm_network.route_tables_list testgroup

    '''
    result = {}
    netconn = __utils__['azurearm.get_client']('network', **kwargs)
    try:
        tables = __utils__['azurearm.paged_object_to_list'](
            netconn.route_tables.list(
                resource_group_name=resource_group
            )
        )

        for table in tables:
            result[table['name']] = table
    except CloudError as exc:
        __utils__['azurearm.log_cloud_error']('network', str(exc), **kwargs)
        result = {'error': str(exc)}

    return result