more cleanups and removals
small updates in vpn-maint-reset-controller
use vpn-maint-apply-changes with vpn-maint-reset-system
only use wg0 for wg-quick
only use wg0, do not disable wg-quick on apply
make the update scripts only update the OS and software and not restart/regenerate configuration
small updates, remove "multi" scripts
disconnect wireguard clients before applying changes
also run apply-changes on controller(s) in multi node/controller deployment
clean db when applying changes to eject invalid peers/certs
only call server-config on node, but run daemon-sync on controller
make vpn-maint-apply-changes only work on systems with vpn-server-node installed