[Glossary] Consolidate project codenames [oslo]
[Glossary] Consolidate project codenames [oslo]

- Combine "Common Libraries service (oslo)" entry with "oslo" entry
  - Link "oslo" to "Common Libraries service (oslo)"

Change-Id: Id8668ccff6727ea6dacb046bda85bf141ddd4659
Implements: bp improve-glossary-usage

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals