statsd input plugin correctly handles colons in data-dog tag values n…

…ow (#1794)

* Code correctly handles colons in tag values now

* Modified existing datadog tag test to include a tag value containing a colon

plugins/inputs/statsd/statsd.go

@@ -348,7 +348,7 @@ func (s *Statsd) parseStatsdLine(line string) error {
 				tagstr := segment[1:]
 				tags := strings.Split(tagstr, ",")
 				for _, tag := range tags {
-					ts := strings.Split(tag, ":")
+					ts := strings.SplitN(tag, ":", 2)
 					var k, v string
 					switch len(ts) {
 					case 1:

plugins/inputs/statsd/statsd_test.go

@@ -693,7 +693,7 @@ func TestParse_DataDogTags(t *testing.T) {
 	s.ParseDataDogTags = true
 
 	lines := []string{
-		"my_counter:1|c|#host:localhost,environment:prod",
+		"my_counter:1|c|#host:localhost,environment:prod,endpoint:/:tenant?/oauth/ro",
 		"my_gauge:10.1|g|#live",
 		"my_set:1|s|#host:localhost",
 		"my_timer:3|ms|@0.1|#live,host:localhost",
@@ -703,6 +703,7 @@ func TestParse_DataDogTags(t *testing.T) {
 		"my_counter": map[string]string{
 			"host":        "localhost",
 			"environment": "prod",
+			"endpoint":    "/:tenant?/oauth/ro",
 		},
 
 		"my_gauge": map[string]string{