Fix Graphite output mangling '%' character.

closes #1377

CHANGELOG.md

@@ -12,6 +12,7 @@
 - [#1112](https://github.com/influxdata/telegraf/issues/1112): Set default Zookeeper chroot to empty string.
 - [#1335](https://github.com/influxdata/telegraf/issues/1335): Fix overall ping timeout to be calculated based on per-ping timeout.
 - [#1374](https://github.com/influxdata/telegraf/pull/1374): Change "default" retention policy to "".
+- [#1377](https://github.com/influxdata/telegraf/issues/1377): Graphite output mangling '%' character.
 
 ## v1.0 beta 1 [2016-06-07]
 

plugins/outputs/graphite/graphite.go

@@ -96,7 +96,7 @@ func (g *Graphite) Write(metrics []telegraf.Metric) error {
 	// Send data to a random server
 	p := rand.Perm(len(g.conns))
 	for _, n := range p {
-		if _, e := fmt.Fprintf(g.conns[n], graphitePoints); e != nil {
+		if _, e := fmt.Fprint(g.conns[n], graphitePoints); e != nil {
 			// Error
 			log.Println("ERROR: " + err.Error())
 			// Let's try the next one