The URLs of some API references was changed in favor of using
the official service types (project-config commit 252673743a).
This commit adds redirect for them.
Redirects for shared-file-system and cluster do not need to use
RedirectMatch. Redirect directive is enough.
Also reorganizes redirect entries.
Change-Id: I8114b28adba7c5fa65566632b3b347ace433251b
94f9d872d9