[Technical Preview] Collect Kubernetes metrics from kube-state-metrics

User Story:

As a dashboard developer, I want to be able to create dashboards using kube-state-metrics. So I'll be able to provide better dashboards for Kubernetes clusters within PMM.

Acceptance criteria:

kube-state-metrics metrics are available in PMM.

Suggested implementation:

We need to collect Kubernetes metrics from kube-state-metrics.
For it, we should start kube-state-metrics pod if it's not running yet and make the victory metrics operator collect metrics from there.

To start kube-state-metrics we can apply all files in https://github.com/kubernetes/kube-state-metrics/tree/v2.5.0/examples/standard 

To collect kube-state-metrics with VM-operator we should apply this file https://gist.github.com/f41gh7/1fed801c5e288e8a6bdbd931ae0f74fd#file-kube-state-metrics-yaml

Useful resources.

https://github.com/kubernetes/kube-state-metrics

https://github.com/VictoriaMetrics/helm-charts/blob/master/charts/victoria-metrics-k8s-stack/README.md

https://gist.github.com/f41gh7/1fed801c5e288e8a6bdbd931ae0f74fd#file-kubelet-yaml

https://gist.github.com/f41gh7/1fed801c5e288e8a6bdbd931ae0f74fd#file-kube-state-metrics-yaml