serviceAccount name override for each statefulset separately

[sheinat-ab]

**Is your feature request related to a problem?

Hi! We are using otel prometheus receiver(not to replace prometheus, but instead of telegraf and remote write). In order to scrape kubelet and CA advisor metrics, we need "nodes/metrics" permissions in the ClusterRole. Although, we do see in the latest version that you can use otel collector and deploy a clusterrole with these permissions, we would like general override support of statefulset serviceaccounts or to add "nodes/metrics" to the sumologic ClusterRole.

Describe the solution you'd like A clear and concise description of what you want to happen.

We would like "nodes/metrics" permissions to be added to the sumologic ClusterRole OR better-yet, serviceAccount override name support for each statefulset, so that we can have the metrics statefulset use a custom serviceAccount with permissions to scrape ca advisor metrics.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

We either need to manage the sumologic helm chart files locally or edit clusterrole permissions after the helm chart is deployed.

Additional context Add any other context or screenshots about the feature request here.

For users who are adding custom processors/receiver/configuration for otel metrics, they should also be able to manage which serviceAccounts should be used according to the permissions that are needed to scrape targets