[glossary] Consolodate project codenames [watcher]
[glossary] Consolodate project codenames [watcher]

- Add "Infrastructure Optimization servicee (watcher)" entry.
  - Link "watcher" to "Infrastructure Optimization servicee (watcher)"
  - Make sure description matches project.yaml

Change-Id: I044761569b1a459434dc20d7a247b5488909ca58
Implements: bp improve-glossary-usage

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