This patch adds the ability to configure Keystone as a Service
Provider (SP) for a Federated Identity Provider (IdP).
* New variables to configure Keystone as a service provider are now
supported under a root `keystone_sp` variable. Example configurations
can be seen in Keystone's defaults file. This configuration includes
the list of identity providers and trusted dashboards. (At this time
only one identity provider is supported).
* Identity provider configuration includes the remote-to-local user
mapping and the list of remote attributes the SP can obtain from the
IdP.
* Shibboleth is installed and configured in the Keystone containers when
SP configuration is present.
* Horizon is configured for SSO login
DocImpact
UpgradeImpact
Implements: blueprint keystone-federation
Change-Id: I78b3d740434ea4b3ca0bd9f144e4a07026be23c6
Co-Authored-By: Jesse Pretorius <jesse.pretorius@rackspace.co.uk>
17ac571e7a