
Add API reference documentation for the x-openstack-image-size header in PUT /v2/images/{image_id}/file and PUT /v2/images/{image_id}/stage endpoints. Assisted-By: Cursor (claude-3.5-sonnet) Change-Id: Ie733373c093bed4866719f163a75abaff4abe6a2 Signed-off-by: Abhishek Kekane <akekane@redhat.com>