We propose to extend Keystone identity provider (IdP) attribute mapping
schema to make Keystone honor the `domain` configuration that we have
on it.
Currently, that configuration is only used to define a default domain
for groups (and then each group there, could override it). It is
interesting to expand this configuration (as long as it is in the root
of the attribute mapping) to be also applied for users and projects.
Moreover, to facilitate the development and extension concerning
attribute mappings for IdPs, we changed the way the attribute mapping
schema is handled. We introduce a new configuration
`federation_attribute_mapping_schema_version`, which defaults to "1.0".
This attribute mapping schema version will then be used to control the
validation of attribute mapping, and also the rule processors used to
process the attributes that come from the IdP. So far, with this PR,
we introduce the attribute mapping schema "2.0", which enables
operators to also define a domain for the projects they want to assign
users. If no domain is defined either in the project or in the global
domain definition for the attribute mapping, we take the IdP domain
as the default.
Change-Id: Ia9583a254336fad7b302430a38b538c84338d13d
Implements: https://bugs.launchpad.net/keystone/+bug/1887515
Closes-Bug: #1887515
14ac08431f