[pve-devel] pve-firewall : add ips feature v4

[Dietmar Maurer]

> fixme :
> I have a warning
> "
> unable to update chain 'vmbr1-IPS'
> unable to apply firewall changes
> "
> 
> I don't known why, because chains are correctly applied

Please add the following to $is_pvefw_chain sub:

-	return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT)$/;
+	return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/;