* Add RHEL 9.0 and FreeBSD 13.1 to CI.
* Add Ubuntu 22.04 and Fedora 36 to CI.
* Switch orders so that root doesn't have a SHA1 signature.
* Skip openssh_cert test on RHEL 9.0.
* Make it possible that pyOpenSSL isn't installed *at all*.
* Work with default.
* Allow multiple intermediate CAs to have same subject.
* Add tests.
* Fix test name.
* Don't use CN for SAN.
* Make a bit more compatible.
* Include jinja2 compat for CentOS 6.