Handle new gitmon protocol

The gitmon scheduler is not able to parse the new gitmon
message format that changed to `wait <delay> <reasons>\n` and `fail <delay> <reasons>\n`.

This commit tries to fix that parsing.

internal/governor/governor.go

@@ -92,11 +92,13 @@ func update(w io.Writer, ud updateData) error {
 
 type WaitError struct {
 	Duration time.Duration
+	Reason   string
 }
 
-func newWaitError(duration time.Duration) error {
+func newWaitError(duration time.Duration, reason string) error {
 	return WaitError{
 		Duration: duration,
+		Reason:   reason,
 	}
 }
 
@@ -138,11 +140,13 @@ func schedule(r *bufio.Reader, w io.Writer, sideband io.Writer) error {
 		sideband.Write(b)
 	}
 
+	words := strings.SplitN(line, " ", 3)
 	switch words[0] {
 	case "continue":
 		return nil
 	case "wait":
 		duration := 1 * time.Second
+		reason := ""
 		if len(words) > 1 {
 			d, err := strconv.Atoi(words[1])
 			if err != nil {
@@ -151,11 +155,14 @@ func schedule(r *bufio.Reader, w io.Writer, sideband io.Writer) error {
 				duration = time.Duration(d) * time.Second
 			}
 		}
-		return newWaitError(duration)
+		if len(words) > 2 {
+			reason = words[2]
+		}
+		return newWaitError(duration, reason)
 	case "fail":
 		reason := "UNKNOWN"
 		if len(words) > 1 {
-			reason = words[1]
+			reason = strings.Join(words[1:], " ")
 		}
 		return newFailError(reason)
 	default: