---
fixes:
  - |
    Fixed the schema validation for attachment create API
    to make instance uuid an optional field. It had mistakenly
    been defined as a required field when schema validation
    was added in an earlier release.
    Also updated the schema to allow specification of the ``mode``
    parameter, which has been available since microversion >= 3.54,
    but which was not recognized as a legitimate request field.

Add releasenote for schema validation fix
Add releasenote for schema validation fix

With change I5108fd51effa4d72581654ed450d191a13e0e964, we changed
schema validation for attachment create API to make the instance uuid
parameter optional and also add validation for mode parameter.
This is a followup patch to add a releasenote for the same.

Change-Id: I4a6e93ea98cfd4988d38bedca6e5538391c1f74d
