Fix the test failures in HTTPFS: In some tests setReplication called after fs close.

Currently 2 HTTFS test cases failing due to filesystem open check in fs operations

This is the JIRA fix these failures.

Failure seems like
test case is closing fs first and then doing operation. Ideally such test could pas earlier as dfsClient was just contacting with NN directly. But that particular closed client will not be useful for any other ops like read/write. So, usage should be corrected here IMO.

 fs.close();
    fs.setReplication(path, (short) 2);