Hey everyone. I'm working with others on the KubernetesExecutor. As we were building out pieces of the executor, we realized it would be nice to have an integration test environment to test the bits of code involving the Kubernetes integration (specifically around crash safety, but also useful for regression purposes).
I did some testing and found running minikube on travis is possible with minikube's `driver=None` mode, which deploys kubernetes locally instead of in a VM (see here: https://github.com/kubernetes/minikube#linux-continous-integration-with-vm-support). I spun up a minikube cluster on travis this way and it's definitely technically viable. The issue now is it looks like no other contrib executors have integration tests, so I'm not sure what pattern I should follow on integration testing (or even if airflow wants to accept integration tests for this). There would be relatively few tests but they would be heavyweight (ie: spin up minikube, build airflow + docker image, deploy airflow+postgres on kubernetes, run tests that spin up dags and then kill the scheduler and assert everything succeeds after enough time passes for recovery). I'm open to ideas, just wanting to get a feel from the community before starting too much work.
