Work on KNOX-1322 started by Phil Zampino.
> Support configuration property to forcibly treat topologies as read-only
> ------------------------------------------------------------------------
>                 Key: KNOX-1322
>                 URL: https://issues.apache.org/jira/browse/KNOX-1322
>             Project: Apache Knox
>          Issue Type: Bug
>          Components: AdminUI, Server
>    Affects Versions: 1.1.0
>            Reporter: Phil Zampino
>            Assignee: Phil Zampino
>            Priority: Major
>             Fix For: 1.1.0
> Define a property in gateway-site.xml to support the specification of a list 
> of one or more topology names. These names represent well-known topologies 
> which should be treated as read-only.
> The Admin API for getting a topology should reference this property, and for 
> matching topologies, force the generated element value to be true.
> This has the side-effect of making these topologies read-only in the Admin UI.
> This can be used when Knox is managed by Ambari, to prevent admins from 
> modifying Ambari-managed topologies (e.g., admin.xml, default.xml, etc...) 
> via the Knox Admin UI. If this were permitted, then changes made using the 
> Admin UI could be overwritten by Ambari at some subsequent point, which is 
> probably not what an admin would expect.

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