v8.0.0 (Wallaby)

• Breaking change: the format of enos info has changed
• Add support for kolla-ansible 12 (Openstack Wallaby), which is now the default
• Install a fixed version of Docker on nodes
• Add support for Debian 11 base image
• Add support for Python 3.10 and 3.11
• Drop support for Python 3.7
• Update to Enoslib 8
• When creating a configuration template, use a fixed version of kolla-ansible (so that templates are not affected when future versions of Enos update the default version of kolla-ansible)