feature request: cloud validation test suite for existing deployments

anbox-cloud-tests is a really nice validation tool, but this is designed to be only used to validate and test new deployments. That is, it would not be suitable to run against an existing deployment in production, because it deletes all existing containers, and runs stress tests.

It would be nice to have a similar validation tool (or a new mode for anbox-cloud-tests) that can be safely run against an existing cluster without disrupting existing resources (containers, sessions, etc.) or normal operation (eg. no heavy stress tests).

The motivation for this is that we would like an automated method to test and validate existing deployments after some major change, such as an upgrade.