Non-systemd environment variables are not correctly set since version 1.11.0 of this role

[haxorof]

After some cleanups due to Ansible-lint report the non-systemd include was incorrectly "fixed" causing it to not be included when systemd is not present in the system.

https://github.com/haxorof/ansible-role-docker-ce/blob/1.11.0/tasks/main.yml#L72