feature: add tests for native deployment / exercise it in CI #500

Since native serves at the basis for packaged deployments, and is, at the moment, basically the only "re-deployable" deployment, we should make sure nothing is inadvertently broken with it.

Not sure at the moment hot to best test it. I guess the simplest things would be to run integrations tests against it as well as against docker deployment; this should be doable with minimal modifications to integration-tests/Makefile + some CI pipeline changes.