fix(service-details): avoid sending unmodified service reservation, limits and update config (#1625)

app/docker/views/services/edit/serviceController.js

@@ -254,6 +254,7 @@ function ($q, $scope, $transition$, $state, $location, $timeout, $anchorScroll,
     config.TaskTemplate.Placement.Constraints = ServiceHelper.translateKeyValueToPlacementConstraints(service.ServiceConstraints);
     config.TaskTemplate.Placement.Preferences = ServiceHelper.translateKeyValueToPlacementPreferences(service.ServicePreferences);
 
+    if ($scope.hasChanges(service, ['LimitNanoCPUs', 'LimitMemoryBytes', 'ReservationNanoCPUs', 'ReservationMemoryBytes'])) {
       // Round memory values to 0.125 and convert MB to B
       var memoryLimit = (Math.round(service.LimitMemoryBytes * 8) / 8).toFixed(3);
       memoryLimit *= 1024 * 1024;
@@ -269,13 +270,16 @@ function ($q, $scope, $transition$, $state, $location, $timeout, $anchorScroll,
           MemoryBytes: memoryReservation
         }
       };
+    }
 
+    if($scope.hasChanges(service, ['UpdateFailureAction', 'UpdateDelay', 'UpdateParallelism', 'UpdateOrder'])) {
       config.UpdateConfig = {
         Parallelism: service.UpdateParallelism,
         Delay: ServiceHelper.translateHumanDurationToNanos(service.UpdateDelay) || 0,
         FailureAction: service.UpdateFailureAction,
         Order: service.UpdateOrder
       };
+    }
 
     if ($scope.hasChanges(service, ['RestartCondition', 'RestartDelay', 'RestartMaxAttempts', 'RestartWindow'])){
       config.TaskTemplate.RestartPolicy = {