deduplicate kubelet/kubeproxy metrics collection

[ilyam8]

This PR fixes duplicate metrics collection from kubelet by aligning the static job names in our Helm chart with the dynamic job names used by the locallisteners discoverer.

We were collecting metrics from kubelet twice:

• Once through the static k8s_kubelet job defined in our Helm chart
• Once through the dynamic local job discovered by the locallisteners discoverer

Both jobs were running simultaneously because they had different names, resulting in duplicate metrics.

[ralphm]

This looks good to me. We should note somewhere that this canl cause the "loss" of a job.

[witalisoft]

good catch

[ilyam8]

This looks good to me. We should note somewhere that this canl cause the "loss" of a job.

The proper fix would be removing these static jobs from the Helm chart entirely, as the locallisteners discoverer creates identical jobs automatically. However, we need to verify that discovery works correctly for both kubelet (this one is more or less confirmed) and kubeproxy before making that change.