Made Domain name/id configuratble, not hardcoded

Domain name/id was hardcoded, always Default/default.
Now it is configurable: in the reclass on cluster level
in runtest.yml you can set keystone:client:os_client_config:
cfgs:root:content:clouds:admin_identity:auth:
project_domain_name/user_domain_name pillar to set some
specific domain. By default, the Default domain is used.

Change-Id: Id82b9d4f108fef6cd2ddced9241e907441f2d36c
Related-PROD: PROD-28480
3 files changed