Remove daemonize dependency

[bojanserafimov]

The library is not maintained anymore https://github.com/knsd/daemonize/issues/46

And there are other reasons to do daemonization differently, I'll let @funbringer elaborate (feel free to edit).

Originally posted by @funbringer in https://github.com/neondatabase/neon/pull/1834#issuecomment-1142398481

[hlinnaka]

+1 on modernizing this.

Would we still have a PID file, or is there a more modern alternative for that?

[kelvich]

JFYI on prod/staging we use systemd and do not pass --daemonize, so in theory we can remove this mode at all.

[LizardWizzard]

Causing trouble again. Having quite a lot of unable to lock pid file. could not daemonize. bailing. errors here https://github.com/neondatabase/neon/runs/7690981632?check_suite_focus=true

[bojanserafimov]

https://github.com/neondatabase/neon/runs/7786990204?check_suite_focus=true

failed on ci 3 times in a row

[hlinnaka]

Yeah, the failures are annoying and we need to fix them.

Let's track the failures, and fixing them one way or another, in https://github.com/neondatabase/neon/issues/2247. And keep this issue to track removing daemonize altogether.