Dockerctl doesn't purge stale iptables rules: '$' is missed

[Artem Panchenko]

After starting docker container dockerctl utility checks firewall rules and remove stale ports redirections if any. Currently this function doesn't work because '$' is missed here:

https://github.com/stackforge/fuel-library/blob/master/deployment/puppet/docker/templates/functions.sh.erb#L422

that line should look like this:

    for portproto in $ports; do

[Matthew Mosesohn (raytrac3r)]

I am already addressing this here:
 https://review.openstack.org/#/c/114921/