These tests rely on the existence of a backend CA. It is easiest to
test with a self-signed CA in ~/.ipa so that is what I documented.
These tests are skipped if no CA is available.
Improved robustness a bit by putting the cleanup as a separate test.
This assumes that the developer has the equivalent of a selfsign CA
installed. To do this, install IPA without a CA and copy
/etc/httpd/alias/*.db to ~/.ipa/alias and
/etc/httpd/alias/pwdfile.txt to ~/.ipa/alias/.pwd