set monitor sampling interval through json file

mindspore/ccsrc/dataset/core/config_manager.cc

@@ -41,6 +41,7 @@ Status ConfigManager::FromJson(const nlohmann::json &j) {
   set_worker_connector_size(j.value("workerConnectorSize", worker_connector_size_));
   set_op_connector_size(j.value("opConnectorSize", op_connector_size_));
   set_seed(j.value("seed", seed_));
+  set_monitor_sampling_interval(j.value("monitorSamplingInterval"));
   return Status::OK();
 }
 

mindspore/dataset/core/configuration.py

@@ -185,7 +185,8 @@ class ConfigurationManager:
             >>> #     "numParallelWorkers": 4,
             >>> #     "workerConnectorSize": 16,
             >>> #     "opConnectorSize": 16,
-            >>> #     "seed": 5489
+            >>> #     "seed": 5489,
+            >>> #     "monitorSamplingInterval": 30 
             >>> # }
         """
         self.config.load(file)