[2203] Backup admin powershell update

[yanqiongchen]

Backup admin powershell update for new API version 2021-09-01.

[bganapa]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 3 pipeline(s).

[yanqiongchen]

@bganapa @TheOnlyWei Could you please help trigger the pipelines again?

[sarathys]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 3 pipeline(s).

[bganapa]

Pls update the change log with examples on whats the old usage and new usage. Think of it like a migration guide for the users of Set-AzsBackupConfiguration https://github.com/Azure/azurestack-powershell/blob/dev/src/changelog.md

[yanqiongchen]

Pls update the change log with examples on whats the old usage and new usage. Think of it like a migration guide for the users of Set-AzsBackupConfiguration https://github.com/Azure/azurestack-powershell/blob/dev/src/changelog.md

Updated the changelog, please have a check. As we are planning to release it next year (2204 as I marked in the PR title), updating the changelog may have some conflicts before that, please let me know if you have any concern.

[azure-pipelines[bot]]

Azure Pipelines successfully started running 3 pipeline(s).

[bganapa]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 3 pipeline(s).

[bganapa]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 3 pipeline(s).

[bganapa]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 3 pipeline(s).