Merge pull request #9 from hellofresh/patch/CRS-1632-add-cadvisor

CRS-1632 Add cadvisor

Merge pull request #6 from hellofresh/patch/upgrade

Support newer versions of Ubuntu

Merge pull request #5 from hellofresh/patch/keyserver

Update keyserver

Merge pull request #5 from hellofresh/patch/keyserver

Update keyserver

Merge pull request #2 from hellofresh/add-docker-conf

make docker conf configurable

Merge pull request #1 from hellofresh/feature/add-docker-py

Install docker-py as Ansible docker module prerequisite.