Add all valid file extensions for systemd units

[eira-fransham]

See #2100

Adds the following to the list of valid extensions for systemd units:

• .socket
• .device
• .mount
• .automount
• .swap
• .target
• .path
• .slice
• .scope

[eira-fransham]

The error reported from the CI test appears to be unrelated to the changes, could someone with the correct permissions trigger a rerun?

[jordansissel]

Thanks for improving FPM :-)

I agree the failure is unrelated. I don’t think re-running it would resolve it. I am OK with the tests as is and consider it a success.

I’ll see if I can get the code reviewed soon :-)

[jordansissel]

Looks good! Added one comment.

[jordansissel]

Thank you!

Testing manually, looks good:

% bundle exec bin/fpm -s empty -t deb -n example --deb-systemd foo.asdf
Invalid package configuration: Invalid systemd unit file extension: .asdf. Expected one of: .service, .socket, .device, .mount, .automount, .swap, .target, .path, .timer, .slice, or .scope {level: :error}