Merge pull request #936 from X-Ultra/dev_retry_clear_reason

Reset the reason when task retry

core/src/main/java/com/netflix/conductor/core/execution/DeciderService.java

@@ -380,7 +380,7 @@ Task retry(TaskDef taskDefinition, WorkflowTask workflowTask, Task task, Workflo
         rescheduled.setPollCount(0);
         rescheduled.setInputData(new HashMap<>());
         rescheduled.getInputData().putAll(task.getInputData());
-
+        rescheduled.setReasonForIncompletion(null);
 
         if (StringUtils.isNotBlank(task.getExternalInputPayloadStoragePath())) {
             rescheduled.setExternalInputPayloadStoragePath(task.getExternalInputPayloadStoragePath());