Moves the appropriate specs from 'approved' to 'implemented' and sets up the http redirects so that current links to the specs won't break. Change-Id: Ifb819dcc01a643ba39962f47c7165bafa624392e
The spec addresses OSSN-0075 based on discussions at the Rocky PTG and subsequent discussion in #openstack-glance [0]. [0] http://eavesdrop.openstack.org/irclogs/%23openstack-glance/%23openstack-glance.2018-03-16.log.html#t2018-03-16T16:31:52 Change-Id: I00e67b5a901f1e49f18dab3dfc7c0a8325c7bf85