fix leap_status value in chrony input plugin (#1983)

plugins/inputs/chrony/chrony.go

@@ -103,9 +103,13 @@ func processChronycOutput(out string) (map[string]interface{}, map[string]string
 			tags["stratum"] = valueFields[0]
 			continue
 		}
+		if strings.Contains(strings.ToLower(name), "reference_id") {
+			tags["reference_id"] = valueFields[0]
+			continue
+		}
 		value, err := strconv.ParseFloat(valueFields[0], 64)
 		if err != nil {
-			tags[name] = strings.ToLower(valueFields[0])
+			tags[name] = strings.ToLower(strings.Join(valueFields, " "))
 			continue
 		}
 		if strings.Contains(stats[1], "slow") {

plugins/inputs/chrony/chrony_test.go

@@ -27,7 +27,7 @@ func TestGather(t *testing.T) {
 
 	tags := map[string]string{
 		"reference_id": "192.168.1.22",
-		"leap_status":  "normal",
+		"leap_status":  "not synchronized",
 		"stratum":      "3",
 	}
 	fields := map[string]interface{}{
@@ -85,7 +85,7 @@ Skew            : 0.006 ppm
 Root delay      : 0.001655 seconds
 Root dispersion : 0.003307 seconds
 Update interval : 507.2 seconds
-Leap status     : Normal
+Leap status     : Not synchronized
 `
 
 	args := os.Args