[k8s-runtime] Use `preview` release train to install storage class extension when enabling storage class service

[ddadaal]

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

Related command

az k8s-runtime storage-class enable.

Use preview release train to install storage class extension when enabling storage class service

General Guidelines

• [x] Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• [x] Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)
• [x] My extension version conforms to the Extension version schema

For new extensions:

• [ ] My extension description/summary conforms to the Extension Summary Guidelines.

About Extension Publish

There is a pipeline to automatically build, upload and publish extension wheels.
Once your pull request is merged into main branch, a new pull request will be created to update src/index.json automatically.
You only need to update the version information in file setup.py and historical information in file HISTORY.rst in your PR but do not modify src/index.json.

[azure-client-tools-bot-prd[bot]]

️✔️Azure CLI Extensions Breaking Change Test

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️✔️Non Breaking Changes

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[yonzhan]

k8s-runtime

[github-actions[bot]]

For more info about extension versioning, please refer to Extension version schema

[ddadaal]

@zhoxing-ms hello, is there any update about this PR?

[azclibot]

[Release] Update index.json for extension [ k8s-runtime ] : https://dev.azure.com/azclitools/release/_build/results?buildId=168707&view=results