EventHub: Added support for 2021-06-01-preview API version

[v-Ajnava]

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• Service Bus and EventHub : 2021-06-01-preview - Added optional Properties azure-rest-api-specs#15233
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[v-Ajnava]

Hi @archerzz can you please review the PR and help me understanding the error here ?

[archerzz]

There are quite many breaking changes. @v-Ajnava Could you please confirm that it's due to REST API changes (I guess so)?

Besides, you need to update https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/eventhub/Microsoft.Azure.Management.EventHub/AzSdk.RP.props

[archerzz]

Had a meeting with @v-Ajnava The changes are expected. They are due to changes in REST API spec.