Upgrade hdfs2 version to 2.8.5 (#8319)
Upgrade hdfs2 version to 2.8.5 (#8319)

Signed-off-by: xiaolong.ran <7d13e43fbbc3fc16d27e460280d19c5113a24274@apache.org>


Fixes #8305 


### Motivation

In Apache Hadoop 2.8.2, there are the following security issues:

- CVE-2018-1296
- CVE-2018-8009

Recommended upgrade version：2.8.5

### Modifications

- Upgrade hdfs2 version to `2.8.5`


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