In Juno, Glance will provide a metadata definitions catalog where users can register the available metadata definitions that can be used on different types of resources (images, artifacts, volumes, flavors, aggregates, etc). This include both simple tags and key / value pairs (properties, specs, etc).
 Approved Glance Juno Spec: 
 Glance PTL Juno Feature Overview: 
Work is currently in progress. Seeː https://etherpad.openstack.org/p/glance-metadata-catalog-tasks
Horizon Patch Testing with Mock API
For testing the Horizon widget patches without the latest Glance code, do the following to apply a simple mock API.
- Go toː https://review.openstack.org/113049
- Follow the instructions in the commit message.