(It is very **important** that you created an Apache Knox JIRA for this change and that the PR title/commit message includes the Apache Knox JIRA ID!)

## What changes were proposed in this pull request?

(Please fill in changes proposed in this fix)

## How was this patch tested?

(Please explain how this patch was tested. For instance: running automated unit/integration tests, manual tests. Please write down your test steps as detailed as possible)
(If this patch involves UI changes, please attach a screen-shot; otherwise, remove this)

Please review [Knox Contributing Process](https://cwiki.apache.org/confluence/display/KNOX/Contribution+Process#ContributionProcess-GithubWorkflow) before opening a pull request.
