Trigger heartbeat 10 mins after install (#5732)

Restores how this was working before it was unintentionally changed to run at midnight in 2.8

cli/cmd/install.go

@@ -306,6 +306,9 @@ func install(ctx context.Context, w io.Writer, values *l5dcharts.Values, flags [
 		return err
 	}
 
+	t := time.Now().Add(10 * time.Minute).UTC()
+	values.HeartbeatSchedule = fmt.Sprintf("%d %d * * * ", t.Minute(), t.Hour())
+
 	return render(w, values, stage, options)
 }