Return the content of a bond script

    CLI Example:

    .. code-block:: bash

        salt '*' ip.get_bond bond0

def get_bond(iface):
    '''
    Return the content of a bond script

    CLI Example:

    .. code-block:: bash

        salt '*' ip.get_bond bond0
    '''
    path = os.path.join(_RH_NETWORK_CONF_FILES, '{0}.conf'.format(iface))
    return _read_file(path)