Nova API microversion 2.92 removed the ability to generate a private
key. The user or client is now responsible for generating the key pair.
Start doing that using cryptography, which is in our requirements
(unlike paramiko, which nova uses).
included:
https://review.opendev.org/c/openstack/ec2-api/+/857880https://review.opendev.org/c/openstack/ec2-api/+/859192
Change-Id: I0032de8cd779beafbd6848a2aecbcb6455e8eada
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>