[Lua] Testing lua-filesystem 1.8.0

[Michel Alexandre Salim]

Hi all,

lua-filesystem has not been properly updated since 2015; we missed the
1.7.0 release in 2017 and the 1.8.0 release in April last year.

The changelogs seem to indicate this should be backward-compatible, but
if your package depends on the `lfs` module please test:

F32 https://bodhi.fedoraproject.org/updates/FEDORA-2021-aa4f097cbf
F33 https://bodhi.fedoraproject.org/updates/FEDORA-2021-01aeb6cf2b

This package is already in RHEL so there's no EPEL updates, but the
updated spec has been tested on EPEL8 as well.

Dependent packages:
```
❯ sudo dnf repoquery --whatrequires lua-filesystem
Lmod-0:8.4.1-1.fc33.x86_64
corsix-th-0:0.64-5.fc33.x86_64
lua-moonscript-0:0.5.0-6.fc33.noarch
lua-penlight-0:1.9.2-1.fc33.noarch
prosody-0:0.11.7-1.fc33.x86_64
prosody-0:0.11.7-2.fc33.x86_64
wordgrinder-0:0.7.2-6.fc33.x86_64
wordgrinder-0:0.8-1.fc33.x86_64
```

I've kept the stable autokarma to +3 and disabled the auto-promoting by
time to make sure this does not get accidentally promoted.

Thanks to Robert Scheck for helping modernize the spec (and is now co-
maintaining the package). I've further cleaned it up to match what will
be in the upcoming Lua packaging guidelines.

Best regards,

-- 
Michel Alexandre Salim
profile: https://keyoxide.org/[e-mail]