!10247 Minor log change to fix a tester's ticket

From: @lixiachen
Reviewed-by: @heleiwang,@pandoublefeng,@liucunwei
Signed-off-by: @liucunwei

mindspore/ccsrc/minddata/dataset/engine/cache/cache_main.cc

@@ -118,7 +118,7 @@ ds::Status StartServer(int argc, char **argv) {
   }
 
   // Dump the summary
-  MS_LOG(INFO) << "Cache server has started successfully and is listening on port " << port << std::endl;
+  MS_LOG(WARNING) << "Cache server has started successfully and is listening on port " << port << std::endl;
   MS_LOG(WARNING) << "Logging services started with log level: " << argv[5];
   MS_LOG(WARNING) << builder << std::endl;
   // Create the instance with some sanity checks built in