AppController pod could expose a read-only API

[nebril]

This task is about getting rid of kubectl exec k8s-appcontroller ac-run hacks and providing AppController pod service.

This issue is about allowing AppController to expose information about it's state.

[pigmej]

Exposing API is not that easy, it will require adding Authentication/Authorization probably SSL etc. With exec approach we can rely on k8s mechanisms.

I think we for sure will need API when we will have a very big reason for that. And yeah, exec approach seems to be hacky :) Maybe we should adjust it instead?

[nebril]

OK, I will change this task to be about Read-only API that would provide information about deployments (most importantly, it's state)

[pigmej]

For state we went with #90