We're not going to expose the ability to swap volumes since that's a
things humans should not generally use. From the API docs [1]:
When updating volumeId, this API is typically meant to only be used
as part of a larger orchestrated volume migration operation initiated
in the block storage service via the os-retype or os-migrate_volume
volume actions. Direct usage of this API to update volumeId is not
recommended and may result in needing to hard reboot the server to
update details within the guest such as block storage serial IDs.
Furthermore, updating volumeId via this API is only implemented by
certain compute drivers.
We *do* want users to have the ability to change the delete on
termination behavior though, so that's what we expose.
[1] https://docs.openstack.org/api-ref/compute/?expanded=update-a-volume-attachment-detail#update-a-volume-attachment
Change-Id: I50938e1237b4d298521b26a5f9cb90c018dfebaf
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
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