An investigation of performance issues in Ironic revealed that the
policy checking was performing extra un-needed work which performed
excess computational overhead when parsing the result data.
In this specific case, the Secure RBAC work added some additional
policy checks around individual the fields.
Change-Id: I77b6e0e6c721f2ff1f8b9f511acde97fcdb21a39
Story: 2008885
Task: 42432
(cherry picked from commit 6cd6457479)