Support for Retrieving Multiple JSONPath Keys Simultaneously in kubectl Commands

[D0ri123]

What would you like to be added:
Currently, when using kubectl get secret with jsonpath, we can extract the value of a single key, as shown in the following example:

kubectl get secret -n {namespace} {example-config} -o jsonpath='{.data.A}' | base64 --decode

Here, the jsonpath argument specifies the path to a single environment key (A), and the corresponding value can be retrieved. However, if multiple keys need to be retrieved simultaneously (e.g., A and B), it requires multiple commands or a complex workaround.

Feature Request:
Extend the jsonpath functionality to allow specifying multiple keys in a single command, making it possible to retrieve multiple values at once. For instance:

kubectl get secret -n {namespace} {example-config} -o jsonpath='{.data.A, .data.B}' | base64 --decode

If possible, I would like to contribute by adding this feature myself.

Why is this needed:
By simplifying the process of retrieving a single secret, the workload is reduced, and secret values can be fetched more efficiently.

[k8s-ci-robot]

This issue is currently awaiting triage.

SIG CLI takes a lead on issue triage for this repo, but any Kubernetes member can accept issues by applying the triage/accepted label.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.