Add salt to a bunch of groups

gentoostrap.sh

@@ -304,6 +304,9 @@ build-gentoo-chroot() {
 		useradd salt -m -G wheel -s /bin/bash -u 1000 -U
 		passwd salt
 	fi
+	for group in audio cdrom floppy games usb video wheel; do
+		usermod -G "$group" -a salt || warn "Failed to add salt to group: $group"
+	done
 
 	# Configure Ansible user, his sudo rights are specifically in sudoers
 	if ! id ansible > /dev/null 2>&1; then