Fix project/domain scope in dynamic_creds

Lately merged review [1] changed a nature of a condition
setting domain / project scope. Before identity_admin_domain_scope
was a trigger between domain and project scope, however after
[1] change got merged the domain scope is not set only when
identity_admin_domain_scope is true but also when domain_id or
domain_name of default_admin_creds are set.

identity_admin_domain_scope var should be the only var which decides
whether domain scope will be set or not - in other words, if it's
false it shouldn't matter whether domain_id/domain_name are set at all.

https: //review.opendev.org/c/openstack/tempest/+/686073
Change-Id: Ia6d31980d42861ba5d4f53f99ffd59d0bfed4dd9
1 file changed