Fixes #4241: add carriage returns in the list of nodes for cf-serverd

Now the generated code will look like this
{
        trustkeysfrom     => {
          "127.0.0.0/8" , "::1",
          @{def.acl} ,

                    host2ip("xxxxxxx.labo.normation.com"), "xxxxxxx.labo.normation.com", 
                    host2ip("xxxxxxx.labo.normation.com"), "xxxxxxx.labo.normation.com",