[Improvement-13804] Optimal HDFS configuration acquisition (#13804) (#13811)

defaultFS key from FS_DEFAULT_FS to HDFS_DEFAULT_FS

dolphinscheduler-storage-plugin/dolphinscheduler-storage-hdfs/src/main/java/org/apache/dolphinscheduler/plugin/storage/hdfs/HdfsStorageOperator.java

@@ -183,9 +183,9 @@ public class HdfsStorageOperator implements Closeable, StorageOperate {
      * @return DefaultFS
      */
     public String getDefaultFS() {
-        String defaultFS = getConfiguration().get(Constants.FS_DEFAULT_FS);
+        String defaultFS = hdfsProperties.getDefaultFS();
         if (StringUtils.isBlank(defaultFS)) {
-            defaultFS = hdfsProperties.getDefaultFS();
+            defaultFS = getConfiguration().get(Constants.HDFS_DEFAULT_FS);
         }
         return defaultFS;
     }