[8.2](backport #32539) Feature/remove k8s cache

[mergify]

This is an automatic backport of pull request #32539 done by Mergify.
Cherry-pick of 5503761 has failed:

On branch mergify/bp/8.2/pr-32539
Your branch is up to date with 'origin/8.2'.

You are currently cherry-picking commit 5503761995.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   CHANGELOG.next.asciidoc
	new file:   metricbeat/module/kubernetes/_meta/test/stats_summary_multiple_containers.json
	modified:   metricbeat/module/kubernetes/kubernetes.go
	modified:   metricbeat/module/kubernetes/node/node.go
	modified:   metricbeat/module/kubernetes/state_container/state_container.go
	modified:   metricbeat/module/kubernetes/state_cronjob/state_cronjob.go
	modified:   metricbeat/module/kubernetes/state_daemonset/state_daemonset.go
	modified:   metricbeat/module/kubernetes/state_deployment/state_deployment.go
	modified:   metricbeat/module/kubernetes/state_job/state_job.go
	modified:   metricbeat/module/kubernetes/state_node/state_node.go
	modified:   metricbeat/module/kubernetes/state_pod/state_pod.go
	modified:   metricbeat/module/kubernetes/state_replicaset/state_replicaset.go
	modified:   metricbeat/module/kubernetes/state_service/state_service.go
	modified:   metricbeat/module/kubernetes/state_statefulset/state_statefulset.go
	modified:   metricbeat/module/kubernetes/util/kubernetes.go
	deleted:    metricbeat/module/kubernetes/util/metrics_cache.go
	deleted:    metricbeat/module/kubernetes/util/metrics_cache_test.go
	new file:   metricbeat/module/kubernetes/util/metrics_repo.go
	new file:   metricbeat/module/kubernetes/util/metrics_repo_test.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   metricbeat/module/kubernetes/container/container.go
	both modified:   metricbeat/module/kubernetes/container/container_test.go
	both modified:   metricbeat/module/kubernetes/container/data.go
	both modified:   metricbeat/module/kubernetes/pod/data.go
	both modified:   metricbeat/module/kubernetes/pod/pod.go
	both modified:   metricbeat/module/kubernetes/pod/pod_test.go
	both modified:   metricbeat/module/kubernetes/state_persistentvolume/state_persistentvolume.go
	both modified:   metricbeat/module/kubernetes/state_persistentvolumeclaim/state_persistentvolumeclaim.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[elasticmachine]

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• Start Time: 2022-08-15T16:15:14.639+0000

• Duration: 57 min 2 sec

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Test	Results
Failed	0
Passed	3586
Skipped	877
Total	4463

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[mergify]

This pull request has not been merged yet. Could you please review and merge it @gsantoro? 🙏

[gsantoro]

Backport is not necessary anymore