chg: added in comments the lines needed for the client to use lxc made with ``mirror`` charm.

precise/mirror/hooks/install

@@ -33,6 +33,17 @@ rsync ALL=(root) NOPASSWD: /usr/bin/rsync --server -vlogDtprRze.iLsf --bwlimit=2
 
 EOF
 
+## on client:
 
+#mkdir -p /var/lib/rsync
+
+#groupadd -r rsync
+#useradd -r rsync -d /var/lib/rsync -g rsync
+
+#chown rsync:rsync /var/lib/rsync
+
+#su -c 'ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa -q' - rsync
+## then you should copy /var/lib/rsync/.ssh/id_rsa.pub in the destination LXC's
+## /var/lib/rsync/.ssh/authorized_keys, prefixed with: command="/usr/sbin/ssh-cmd-validate"