The following APIs are missing, - [x] [GET /v3/auth/catalog](https://docs.openstack.org/api-ref/identity/v3/#get-service-catalog) - [x] [GET /v3/auth/projects](https://docs.openstack.org/api-ref/identity/v3/#get-available-project-scopes) - [x] [GET /v3/auth/domains](https://docs.openstack.org/api-ref/identity/v3/#get-available-domain-scopes) - [ ] [GET /v3/auth/system](https://docs.openstack.org/api-ref/identity/v3/#get-available-system-scopes)