make working hours, weekdays configurable by impl ntg

broker/ntgvision_test.go

@@ -1,11 +1,17 @@
 package broker
 
 import (
+	"local/truckstop/config"
+	"os"
 	"testing"
 	"time"
 )
 
 func TestWorkingHoursNTG(t *testing.T) {
+	os.Setenv("CONFIG", "../config.json")
+	if err := config.Refresh(nil); err != nil {
+		t.Fatal(err)
+	}
 	ntg := NTGVision{}
 	if !ntg.workingHours(time.Date(2022, 1, 27, 12, 0, 0, 0, time.FixedZone("MST", -7*60*60))) {
 		t.Fatal("noon MST not ok")