Update-AzCosmosDBAccount is missing ability to set disable key based metadata write access property

[plzm]

To complete the scenario documented in https://docs.microsoft.com/en-us/azure/cosmos-db/how-to-restrict-user-data, the "disableKeyBasedMetadataWriteAccess" account property must be set.

Update-AzCosmosDBAccount does not accept a parameter for this and does not internally operate on this property.

The corresponding Azure CLI command does expose this argument (disable-key-based-metadata-write-access) and allows for this account property to be set:
https://docs.microsoft.com/en-us/cli/azure/cosmosdb#az-cosmosdb-update

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @kushagraThapar, @srinathnarayanan, @southpolesteve, @shurd.

[MehaKaushik]

Targeting either S168 or S169.