This patch implements a change coming in the upcoming Ansible v2
This patch reduces the permissions on the install directory to just the root user and also fixes the ansible-lint issue by specifying the `mode`.
With some of the recently introduced changes especially around the defaults and ipv6 addresses, this patch fixes all remaining issues and makes sure the docker and firewall configuration fits the expectations. Original commit: 7819c8fcc8
7819c8fcc8
