Get the broadcast address associated with a CIDR address.

    CLI example::

        salt myminion netaddress.cidr_netmask 192.168.0.0/20

def cidr_broadcast(cidr):
    '''
    Get the broadcast address associated with a CIDR address.

    CLI example::

        salt myminion netaddress.cidr_netmask 192.168.0.0/20
    '''
    ips = netaddr.IPNetwork(cidr)
    return six.text_type(ips.broadcast)