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For all 27 tests that override credentials, remove custom config and allow test to use Batch role credentials. Example of failure: ``` 1710804060651, APIGatewayTest > initializationError FAILED 1710804060652, aws.sdk.kotlin.runtime.auth.credentials.ProviderConfigurationException at...

This pull request resolves EC2 audit results for Python. --- _By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license._

Spent a few hours improving docs so the team understands how to use the tool. This includes Wiki docs for internal stuff.

### The user story Fix Rubocop violations so that repo is clean. ### Epic link (recommended) _No response_