Our tools noticed that keystone links to
https://docs.openstack.org/keystone/latest/admin/identity-domain-specific-config.html
which does not exist anymore.
The page was removed but the link to it was not changed. Replace this
and similar links with internal links that will work even if files are
moved - and can be verified, thus sphinx will error in case of broken
targets.
These changes include a few other fixes for broken keystone links, e.g.
to renamed anchors.
For the include files in admin/configuration.rst and
admin/federation/configure_federation.rst: Rename them to *inc.
The files were
published twice (as separate files and on this page) and thus
referencing failed. Renaming avoids this.
Also, put doctree outside of html tree so that it does not get
published.
Change-Id: I3d07637b0046cc88a66bcb51a0a4fe7c146c1549
f10f95b455