`SuccessExitStatus` doesn't support multiple values

[lwbt]

Hello I just found this project and I think it will be very useful, while it must be quite a burden to maintain. 💪

I found this error in one of the files I wanted to check:

$ systemdlint jellyfin.service 
jellyfin.service:14:error [InvalidValue] - SuccessExitStatus=0 143

According to the official documentation this should be fine:

https://www.freedesktop.org/software/systemd/man/latest/systemd.service.html#SuccessExitStatus=

Example 1. A service with the SuccessExitStatus= setting

SuccessExitStatus=TEMPFAIL 250 SIGKILL

[priv-kweihmann]

Signals are names or numbers according to the current implementation https://github.com/priv-kweihmann/systemdlint/blame/85fc985ab96f4d476843f3d8b504dde7d170ed5f/systemdlint/systemdlint/cls/value.py#L507.

https://man7.org/linux/man-pages/man7/signal.7.html doesn't list a signal 143, so I'm not sure if the systemd documentation is correct.

But what the linter is trying to tell that it expect a single value only, not more than one, which is the actual bug here

[priv-kweihmann]

For reference this line needs to be patched

systemdlint/systemdlint/systemdlint/conf/knownSettings.py

Line 1111 in 85fc985

Setting(section="Service", name="SuccessExitStatus", allowedValue=SignalValue()),