resource_control: add a example to reset user resource group to default value

[glorv]

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• hfxsd

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[Oreoxmt]

LGTM

[hfxsd]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 344d276

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.6: #13693.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.0: #13694.