`az mysql flexible-server restore` and `az mysql flexible-server geo-restore` should allow to specify identity and encryption key

[kamilzzz]

Related command
az mysql flexible-server restore
az mysql flexible-server geo-restore

Is your feature request related to a problem? Please describe.
Currently Azure CLI doesn't allow to specify identity and key used for CMK data encryption for target server when performing PITR restore or geo-restore. Source server settings are copied to restore request.
Resource Provider allows to specify different identity and encryption key than these configured on source server. Azure Portal also allows to use different values.

Describe the solution you'd like
az mysql flexible-server restore and az mysql flexible-server geo-restore should support --key and --identity parameters.

[yonzhan]

Thank you for opening this issue, we will look into it.

[honghr]

We will plan to add this feature to restore CLI. But for now, we don't support it.