util.prosodyctl.check: Normalize potential to form without trailing '.'
In some cases you might end up with both 'xmpp.example.com' and
'xmpp.example.com.', which are the same thing so no point in doing the
same checks twice.
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