We have project_reader credentials in tempest and they
use the same project as member role creds. Nova support
the project reader role in get server API. Moving the
create server tests to use project reader creds in GET
API calls.
Partial implement blueprint test-nova-with-srbac-defaults
Change-Id: I416b977ab93e4ddd4e64650f257de1295565d8c4
Signed-off-by: Jason Paroly <jparoly@redhat.com>