We always use the same directory for terraform fixtures, so it's quite
easy to figure out its path from a pytest fixture by inspecting the
stack. This commit implements this functionality and decreases the
amount of boilerplate needed to write a test.
(Ported from fast)
* New Cloud Identity module
* Add tests to cloud-identity-group module
* Fix boilerplate
* Fix outputs
* Remove support for creating managers and admins
* Update cloud-identity-group README
* Small fix to cloud-identity-group README