IAM support

[kingbuzzman]

I see this line here: https://github.com/localstack/localstack-python-client/blob/master/localstack_client/config.py#L24

But i don't see any code that supports it in the real localstack repo... can you point me in the right direction? I'm i missing something?

[whummer]

Thanks for reporting @kingbuzzman . IAM is now supported in LocalStack - closing this issue.