Completed the set of RBAC users by adding audit and
creator users for group b, then add those users to the
tests for secret and container GET tests. This completes
the matrix of tests for secret and container GET.
Updated the scripts to ensure the users get setup
correctly in devstack and via keystone_data.sh.
Change-Id: Ib598cab8c36728f8ad91c940680e0cdfcfca5c2e