Test all Kubernetes components work

[lilic]

To avoid #8 (review) in the future there should also be a few test scenarios besides just deployment creation.

[lilic]

@xmudrii I was thinking of something along these lines for the DNS check.

https://github.com/coreos/prometheus-operator/blob/cad1cb29a35b964258367090a837363be73afbdb/scripts/create-minikube.sh#L39-L40

If you can think of any other tests, feel free to add them, thanks!

[xmudrii]

@lilic This one sounds great.

Beside that, I was thinking of adding one check to make sure the created deployment is ready (could also be done with JSONPath), so we're sure scheduler actually works (considering node is ready, that shouldn't be a problem, but one more check is not a bad idea).

/healthz check is what I'm trying to add as well. I got a comment on my PR that I should add it to E2E tests, so if I get it working, we could add it too.

I'll try to think about some other cases/components to test too. I'll probably PR something later in the evening or tomorrow.

[lilic]

@xmudrii Sounds great, no hurry! Thanks again!

[lilic]

Closed by #10