I moved munin to a new host, update the firewall and munin-node rules

Signed-off-by: Mattia Rizzolo <mapreri@ubuntu.com>

roles/common/templates/munin/firewall.sh

@@ -2,4 +2,4 @@
 # {{ ansible_managed }}
 #
 
-cmd4 -A public_input_tcp -p tcp -s 178.62.47.107 --dport 4949 -j ACCEPT
+cmd4 -A public_input_tcp -p tcp -s 95.85.2.163 --dport 4949 -j ACCEPT

roles/common/templates/munin/munin-node.conf

@@ -43,7 +43,8 @@ ignore_file \.pod$
 
 allow ^127\.0\.0\.1$
 allow ^::1$
-allow ^178\.62\.47\.107$  # savidlin.m.o, aka munin.mapreri.org
+allow ^95\.85\.2\.163$  # kahlan.mapreri.org, aka munin.mapreri.org
+allow ^2a03:b0c0:0:1010::d7:d001$  # also kahlan.m.o
 
 # If you have installed the Net::CIDR perl module, you can use one or more
 # cidr_allow and cidr_deny address/mask patterns.  A connecting client must