[arch-mirrors] IP change for archlinux.c3sl.ufpr.br

[Carlos Carvalho]

rsync.archlinux.org is denying access to sagres.c3sl.ufpr.br, due to
an IP change. Would it be possible to grant access based on the host
name?

If not, please configure access for 200.236.31.1, instead of the old
200.17.202.1.

We cannot update while this change is not put in, because of problems
coordinating the two IPs with many mirrors and inbout/outbound
connections.