Proposal: Support az login authentication in the authentication options

[MissaouiChedy]

Most Azure Services support in their client SDKs the capability to authenticate to the service via az cli (az login), this is very useful for local development scenario since it avoids the management of secrets by developers.

For example by using the Azure Event Hubs .NET Client SDK, it is possible to specify new DefaultAzureCredential() as credentials:

var processor = new EventProcessorClient(
    storageClient,
    "main-consumer",
    "********.servicebus.windows.net",
    "main-topic",
    new DefaultAzureCredential());

This covers local az login authentication as well as managed identity authentication and should be available in the Java SDK.

The proposal is to add local az cli authentication to the authentication options for all samplers of this repository.

@kuniteru @dislev @MalachiMcIntosh
If this proposal makes sense, please let me know, I will be glad to contribute.

[MissaouiChedy]

I have a working quick and dirty proof of concept implementation for the eventhubs sampler, available in this commit.

And it looks like this:

Please let me know if it is relevant