Don't manipulate config for admin creds

Soon this will be global tempest config, so modifying it is not an
option.

Instead the client manager can now be replaced with one which uses admin
credentials when setup_clients_for_admin is called.

blueprint tempest-plugin-support

Change-Id: I9c1b80ec2048d227cc99c06808da90745fcf516e
2 files changed
tree: e77b09afb30af714f84fbda27457fb7cd2ceae8e
  1. common/
  2. functional/
  3. scenario/