install: Preserve ACLs and xattrs during rsync

The xattrs are especially important for filecaps needed by
/sbin/unix_chkpwd.

files/scripts/install.sh

@@ -323,7 +323,7 @@ if [[ $shell ]]; then
 fi
 
 task "Copying image..."
-cmd rsync --archive --delete --hard-links --info=progress2 "root@falcon:${img}/" "$target"
+cmd rsync --archive --acls --hard-links --xattrs --delete --info=progress2 "root@falcon:${img}/" "$target"
 
 task "Installing bootloader..."
 chroot_cmd puppet agent --onetime --verbose --no-daemonize --no-splay --show_diff --tags nest::base::bootloader