Add a note service can access v3 API using v2 URL
Add a note service can access v3 API using v2 URL

backport: liberty

Closes-Bug:#1527182
Closes-Bug:#1527386
Change-Id: I5a4bdba998c5492813c60e9f4d23091193fd401e

openstack/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals