Upgrade to custom jclouds-docker 1.8.2-alpha-cloudsoft.6

- Deletes contents of patch/src/main/java, because it is
  contained i the custom jclouds release.
use correct logger for BreadthFirstPlacementStrategy
Disable auto-scaler headroom policy by default
Default to stop iptables on host, rather than opening ports

- As temporary workaround for
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=712691