Add unit test for AWS Transfofmer Authenticate Class

Type of change

• Quality

Please provide link to gitlab issue or ADR(Architecture Decision Record)

This adds Unit Tests for the AWS Specific implementation of the IAuthenticate interface.

Does this introduce a change in the core logic?

• [NO]

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS

Does this introduce a breaking change?

• [NO]

What is the current behavior?

What is the new/expected behavior?

Have you added/updated Unit Tests and Integration Tests?

[YES]