Add VSTP index

dbAccess/cif.go

@@ -182,6 +182,12 @@ func CreateTimetableIndexes() error {
 			},
 			Options: options.Index().SetName("find_by_headcode"),
 		},
+		{
+			Keys: bson.M{
+				"serviceDetail.vstp": 1,
+			},
+			Options: options.Index().SetName("vstp"),
+		},
 		// Add index for VSTP to allow deletion of non-VSTP only entries
 	}