Comment 10 for bug 1786058

Change abandoned by Lee Yarwood (<email address hidden>) on branch: stable/ocata
Review: https://review.openstack.org/603740
Reason: Apologies, finally getting around to looking at this now and as Icdcf681c1d71a09b88b029f80d13cd5015dacd56 landed in stable/queens we can't use it prior to this in Nova. Closing this out.