Fix "computeFault" when v3 API "GET /versions/:(id)" is called

Usually, the API of "GET /versions/:(id)" is not called directly.
However we can call it directly. So this commit fixes it to work
without the "computeFault ... Unexpected API Error".

Change-Id: Ic5513e5bce214d6fe90a9ccd7d056ac1dd0a4d19
Closes-Bug: #1281936
Merge "Fix "computeFault" when v3 API "GET /versions/:(id)" is called"