---
upgrade:
  - Add ``choices`` parameter to config options. Invalid values will be
    rejected when first accessing them, which can happen in the middle of
    deployment.
    * [DEFAULT]/auth_strategy         [keystone, noauth]
    * [glance]/auth_strategy          [keystone, noauth]
    * [glance]/glance_protocol        [http, https]
    * [neutron]/auth_strategy         [keystone, noauth]
    * [amt]/protocol                  [http, https]
    * [irmc]/remote_image_share_type  [CIFS, NFS]
    * [irmc]/port                     [443, 80]
    * [irmc]/auth_method              [basic, digest]
    * [irmc]/sensor_method            [ipmitool, scci]