[BUG][Opensearch] Non-standard labels on chart objects

[smlx]

Describe the bug
Helm and Kubernetes recommend a standard set of labels. The Opensearch chart does not follow that recommendation.

https://helm.sh/docs/chart_best_practices/labels/#standard-labels
https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/

To Reproduce
Compare the labels on the templates in the Opensearch chart to the recommended set of labels.

Expected behavior
I expect the chart to follow best practices with regards to labelling, which helps the chart integrate with standard tooling and procedures.

Chart Name
Opensearch

Screenshots
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Host/Environment (please complete the following information):
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Additional context
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