Add apiserver additionalconfig for cluster agent

[aquiladayc]

What this PR does / why we need it:

Wanted to add use_component_status for kubernetes_apiserver check,
https://github.com/DataDog/datadog-agent/blob/847ecc3a52a2a323409ecde41764e42a18eefc00/pkg/collector/corechecks/cluster/kubernetesapiserver/kubernetes_apiserver.go#L73
however, config is overwritten by event collection configuration.
https://github.com/DataDog/helm-charts/blob/main/charts/datadog/templates/_kubernetes_apiserver_config.yaml#L2

So when k8s event collection is enabled, apiserver check is not customizable. This PR fixes it.

Which issue this PR fixes

Related to CONS-6941

Special notes for your reviewer:

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• Chart Version bumped
• Documentation has been updated with helm-docs (run: .github/helm-docs.sh)
• CHANGELOG.md has been updated
• Variables are documented in the README.md
• For Datadog Operator chart or value changes update the test baselines (run: make update-test-baselines)

[khewonc]

Instead of additionalConfigs, can you add the field directly? For example, kubernetesApiserverCheck.useComponentStatus

[aquiladayc]

@khewonc thanks for feedback. Added clusterAgent.kubernetesApiserverCheck.disableUseComponentStatus because

• Default value is true and hard coded in source code of DCA
• IF statements would be simple (No need to use NOT)
  Let me know what you think or point me if i'm doing something wrong. Thanks!

[khewonc]

Since we have multiple conditions, I think this could be moved to the helper file similar to how we have need-cluster-agent-confd for the cluster agent confd. The helper could then be used in the change you have for charts/datadog/templates/cluster-agent-deployment.yaml

[aquiladayc]

@khewonc I see, created need-kuberetes-apiserver-check-config in helper and updated both.

[clamoriniere]

The comments need to be set on the option, else it is not taken into account in the README.md

Suggested change

	# clusterAgent.kubernetesApiserverCheck.disableUseComponentStatus -- Set this to true to disable use_component_status for the kubernetes_apiserver check
	kubernetesApiserverCheck:
	disableUseComponentStatus: false
	# clusterAgent.kubernetesApiserverCheck -- correspond to options for configuring the kube_apiserver integration.
	kubernetesApiserverCheck:
	# clusterAgent.kubernetesApiserverCheck.disableUseComponentStatus -- Set this to true to disable use_component_status for the kube_apiserver integration.
	disableUseComponentStatus: false