File munin-plugin-haproxy_ng_backend_names.patch of Package munin

--- plugins/node.d/haproxy_ng.in.orig	2014-11-24 22:46:24.000000000 +0100
+++ plugins/node.d/haproxy_ng.in	2016-03-02 14:45:44.933890010 +0100
@@ -252,7 +252,13 @@
 
     foreach(@line)
     {
-        $datas{$types[$line[32]]}{$line[0]}{$line[1]}{$columns[$i]} = $_;
+        my $backend_name = $line[0];
+        my $host_name = $line[1];
+
+        $backend_name =~ s/[^\w]/_/g;
+        $host_name =~ s/[^\w]/_/g;
+
+        $datas{$types[$line[32]]}{$backend_name}{$host_name}{$columns[$i]} = $_;
         $i++;
     }
 }