Measure performance impact on Kubernetes control plane

[voltbit]

Before the operator is production ready we need to measure the load put on the Kubernetes master and etcd by the operator and optimise the API calls if needed. We should be able to observe performance regresson for new features of code changes. Possible requirements:

• [ ] benchmark tests on the number of K8s API calls
• [ ] benchmark tests on network load/traffic for K8s API calls + redis-cli calls

In particular any K8s API call done in a waiting poll should be considered an optimisation opportunity.