Major Description
call to Shiro subject logout method causes exception.
Applications that want to invalidate sessions in Knox by caling Shiro Subject logout method or other methods requiring a Shiro Security Manager may get an exception:
'org.apache.shiro.UnavailableSecurityManagerException: No SecurityManager accessible to the calling code, either bound to the org.apache.shiro.util.ThreadContext or as a vm static singleton. This is an invalid application configuration."