Upgrades, created iptables cleaning mechanism

Sometimes when we run docker stop
(version dc9c28f/0.10.0) it doesn't clean
iptables rules, as result when we run new
container on the same port we have two rules
with the same port but with different IPs,
we have to clean this rules to prevent services
unavailability.

Example of the problem:
  $ iptables -t nat -S
  ...
  -A DOCKER -p tcp -m tcp --dport 443 -j DNAT \
    --to-destination 172.17.0.7:443
  -A DOCKER -p tcp -m tcp --dport 443 -j DNAT \
    --to-destination 172.17.0.3:443

blueprint upgrade-to-5-1

Change-Id: I812090e081aae955df94e61e414fa81c452b4b68
Merge "Upgrades, created iptables cleaning mechanism"