[COOK-500] Sort the list of munin servers and clients to prevent

needless changes in the output files when a search returns the same
set of results in a different order across runs.

munin/recipes/server.rb

@@ -18,6 +18,7 @@
 #
 
 munin_servers = search(:node, "munin:[* TO *] AND chef_environment:#{node.chef_environment}")
+munin_servers.sort! { |a,b| a[:fqdn] <=> b[:fqdn] }
 
 if node[:public_domain]
   case node.chef_environment

munin/templates/default/munin-node.conf.erb

@@ -36,7 +36,7 @@ host_name <%= node[:hostname] %>.ec2.internal
 # doesn't understand CIDR-style network notation.  You may repeat
 # the allow line as many times as you'd like
 
-<% @munin_servers.each do |server| -%>
+<% @munin_servers.sort.each do |server| -%>
 allow ^<%= server[:ipaddress].to_s.gsub(/\./, '\.') %>$
 <% end -%>
 allow ^127\.0\.0\.1$