TaskLifecycleListener will set a TaskExecution's exitCode to null upon taskStart in the repository. Only at the end of the execution will it store the exitCode. resolves spring-cloud/spring-cloud-task#82
TaskLifecycleListener will set a TaskExecution's exitCode to null upon taskStart in the repository. Only at the end of the execution will it store the exitCode. resolves spring-cloud/spring-cloud-task#82