OrchestrationServiceState type  
定义 OrchestrationServiceState 的值。 
              KnownOrchestrationServiceState 可与 OrchestrationServiceState 互换使用,此枚举包含服务支持的已知值。
服务支持的已知值
              NotRunning 
              运行 
              暂停
type OrchestrationServiceState = string