add dns_config and diagnostics parameters to AzureContainerInstancesOperator

[Kylea650]

Closes #39149

When creating a container using the AzureContainerInstanceOperator, it would be good to be able to pass a specific dns configuration and log analytics workspace. These are already supported by the azure management api.

Non-breaking change that adds some nice extra functionality. In some cases, providing an explicit dns config is required for private containers when existing VNet DNS is not picked up. (see https://stackoverflow.com/questions/64700687/how-to-get-azure-container-instances-using-my-dns-server). Adding the ability to send logs to an existing log analytics workspace is a nice quality of life addition for sending non-airflow, application specific logs.

Happy to add more tests if required.

[boring-cyborg]

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[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.