Gitlab CI with the gitlab multirunner container all on AWS ECS.
In this way you can run multiple concurrent test suites each in an insolate container.
In this way you can run multiple concurrent test suites each in an insolate container.
https://www.cloudpipes.com/integrations/github/gitlab-ci
https://about.gitlab.com/2015/01/22/gitlab-7-7-and-ci-5-4-re...
With gitlab-ci build descriptor you can do all you want so maybe you can ignore the gitlab repos and clone from other source, run tests, give the tests output to the gitlab runner ad see results on gitlab console.
(maybe)