Description of problem:

Users, including automated agents, need to be able to see if the volume types which they reference when creating volumes, include extra_specs corresponding to capabilities like multiattach or replication, and features like availability zones.

Version-Release number of selected component (if applicable):

Any

How reproducible:

List volume types or list or show extra_specs without administrative role privileges.

Steps to Reproduce:

See above.

Actual results:

All extra_specs are hidden from non-administrative users.

Expected results:

All users should be able to see extra specs corresponding to abstract, backend-independent capabilities and features.

Additional info:

https://blueprints.launchpad.net/cinder/+spec/expose-user-visible-extra-specs

https://review.opendev.org/c/openstack/cinder-specs/+/796166