Because you must configure the azure-blob-storage-v2 provider with parameters specific to your account (but can leave all other parameters with the recommended values), if you choose to use the cluster-azure-blob-storage-v2 template, your binarystore.xml configuration file should look like this:
<config version="2">
<chain template="cluster-azure-blob-storage-v2"/>
<provider id="azure-blob-storage-v2" type="azure-blob-storage-v2">
<accountName>XXXXXX</accountName>
<accountKey>XXXXXX</accountKey>
<endpoint>https://<ACCOUNT_NAME>.blob.core.windows.net/</endpoint>
<container><NAME></container>
</provider>
</config>