storagenode/console: payout tests and heldhistory joined_at rounding added

Change-Id: I1d43620fbafbf7ed92588b84cb9c6b8ced8832ef

storagenode/console/consoleapi/payout_test.go

@@ -373,7 +373,7 @@ func TestHeldAmountApi(t *testing.T) {
 					HoldForThirdPeriod:  0,
 					TotalHeld:           28,
 					TotalDisposed:       32,
-					JoinedAt:            date,
+					JoinedAt:            date.Round(time.Minute),
 				}
 
 				stefanID, err := storj.NodeIDFromString("118UWpMCHzs6CvSgWd9BfFVjw5K9pZbJjkfZJexMtSkmKxvvAW")

storagenode/payout/service.go

@@ -216,7 +216,7 @@ func (service *Service) AllHeldbackHistory(ctx context.Context) (result []Satell
 			return nil, ErrPayoutService.Wrap(err)
 		}
 
-		history.JoinedAt = stats.JoinedAt
+		history.JoinedAt = stats.JoinedAt.Round(time.Minute)
 		result = append(result, history)
 	}