Deploy to Mesosphere from a successful CI build

Continuing from the ability to deploy GitLab to Mesosphere's DCOS the next step is to deploy to Mesosphere from a successful CI build. The first step should be a manually scalable solution with the next step to create an autoscaling integration.

Mesosphere has started work on this issue and you can find details here:

This relates to Run GitLab with one click on all major Container Schedulers.

cc/ @twk3 who worked on the DCOS integration.