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---
features:
  - Adds a new policy rule that may be used to mask
    instance-specific secrets, such as configdrive contents or the temp URL
    used to store a configdrive or instance image.  This is similar to how
    passwords are already masked.
upgrade:
  - Instance secrets will now, by default, be masked in API
    responses.  Operators wishing to expose the configdrive or instance image
    to specific users will need to update their policy.json file and grant the
    relevant keystone roles.
security:
  - Configdrives often contain sensitive information. Users may upload their
    own images, which could also contain sensitive information.  The Agent
    drivers may store this information in a Swift temp URL to allow access from
    the Agent ramdisk. These URLs are considered sensitive information because
    they grant unauthenticated access to sensitive information.  Now,
    we only selectively expose this information to privileged
    users, whereas previously it was exposed to all authenticated users.