extensions: libxt_cluster: Add translation to nft

extensions: libxt_cluster: Add translation to nft

Add translation for cluster to nft

$ sudo iptables-translate -A PREROUTING -t mangle -i eth1 -m cluster
--cluster-total-nodes 7 --cluster-local-node 5 --cluster-hash-seed
0xdeadbeef -j MARK --set-mark 0xffff

nft add rule ip mangle PREROUTING iifname eth1 jhash ct original saddr
mod 7 seed 0xdeadbeef eq 5 meta pkttype set host counter meta mark set
0xffff

$ sudo iptables-translate -A PREROUTING -t mangle -i eth1 -m cluster
--cluster-total-nodes 7 --cluster-local-nodemask 5 --cluster-hash-seed
0xdeadbeef -j MARK --set-mark 0xffff

nft add rule ip mangle PREROUTING iifname eth1 jhash ct original saddr
mod 7 seed 0xdeadbeef { 0, 2 } meta pkttype set host counter meta
mark set 0xffff

Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>