This bug tracks the remaining work in https://blueprints.launchpad.net/nova/+spec/image-metadata-prefiltering which has been deferred to U to make more review bandwidth available to land higher priority features. this should be back portable downstream to 16.1 as it has no api,db or object changes.
This will need an enhancement doctext once it graduates out of tech preview (https://bugzilla.redhat.com/show_bug.cgi?id=2120761)
Closing as CURRENTRELEASE. The code is present in 17.0 and 17.1, but no further QE work will be performed due to lack of capacity. This puts this RFE into the "implicitly supported" category like most Nova features that originate in the community and that appear in our OSP code without much involvement from Red Hat engineers. If a significant enough bug ends up being reported for this feature, we will re-evaluate the QE situation.