Change `init.d` to use distro-specific commands for enabling/disabling services with defaults.
Change `init.d` to use distro-specific commands for enabling/disabling services with defaults.

Supports: Ubuntu/Debian/CentOS/Fedora/RHEL/Gentoo

Add `init.d_enable` for manual creation of `/etc/rcX.d/Y` links.

Fizzadar/pyinfra,Fizzadar/pyinfra