[AKS] Fix for Approuting CLI - added operation_group for key vault

[bosesuneha]

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This checklist is used to make sure that common guidelines for a pull request are followed.

Related command

az aks approuting update -g 'resource_group' -n 'cluster_name' --enable-kv --attach-kv 'keyvault_id'

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• Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)

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[azure-client-tools-bot-prd]

️✔️Azure CLI Extensions Breaking Change Test

️✔️Non Breaking Changes

[azure-client-tools-bot-prd]

Hi @bosesuneha,
Since the current milestone time is less than 7 days, this pr will be reviewed in the next milestone.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.