dnscache: fix unbound collectd script output

hosts/containers/dnscache/configuration.nix

@@ -162,7 +162,12 @@
                   if l =~ /total\.(.+?)=([\d\.]+)/
                     name = $1
                     value = $2.to_f
-                    ty = (name =~ /\.avg$/ || name =~ /\.median$/ || name =~ /\.max$/ || name =~ /\.min$/) ? "gauge" : "derive"
+                    if name =~ /\.avg$/ || name =~ /\.median$/ || name =~ /\.max$/ || name =~ /\.min$/
+                      ty = "gauge"
+                    else
+                      ty = "derive"
+                      value = value.to_i
+                    end
                     puts "PUTVAL dnscache/unbound/#{ty}-#{name} N:#{value}"
                   end
                 }