Comment 1 for bug 1710850

Do we need a spec for this? I'd be fine if the additional config parameters were described here and they aren't controversial :)

wrt 'pycryptodome', I see this note [1], but I don't think we are using pycrypto? (someone should verify of course)

[1] https://github.com/openstack/requirements/blob/a5892e231bdf80f6b36348b8a1dee0ae09d4fb15/global-requirements.txt#L224