util.prosodyctl.check: Refuse to do ojn test unless prosody is running
Other tests don't require a running prosody and I forgot to start it
when testing.
For full information on our dependencies, version requirements, and
where to find them, see https://prosody.im/doc/depends
If you have luarocks available on your platform, install the following:
- luaexpat
- luasocket
- luafilesystem
- luasec