community/nut: add powerfail service to init.d to shutdown UPS
Hello, I have been setting up UPS control with nut package and I have discovered, that there is missing powerfail service for shutdown runlevel, which will turn off power supply from UPS during powerfail shutdown. I have modified Gentoo init.d service according to apcupsd.powerfail.initd from main/apcupsd package. Here it is powerfail.initd