Glance registry was deprecated in Queens and removed in Stein.
This change removes glance-registry settings and templates
from the glance chart. Also removed the overrides from older
releases that are no longer actively supported and tested.
Change-Id: I704d844b9ab96daa73ec42e29cded31fbbe3f720
Fix some typos that I found in documents(except specs)
* fix trivial mistakes(typos)
* fix the link error(rst->html)
* restore it's -> its
* fix k8s -> K8s
Change-Id: I6ec65e9d04441adac210cc9fd476a37a1cb9644f