Update the AWS automation tests to use existing CloudFormation stacks (#3092)

AutomatedTesting/Gem/PythonTests/AWS/README.md

@@ -0,0 +1,26 @@
+# AWS Gem Automation Tests
+
+## Prerequisites
+1. Build the O3DE Editor and AutomatedTesting.GameLauncher in Profile.
+2. AWS CLI is installed and configured following [Configuration and Credential File Settings](https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html).
+3. [AWS Cloud Development Kit (CDK)](https://docs.aws.amazon.com/cdk/latest/guide/getting_started.html#getting_started_install) is installed.
+
+## Deploy CDK Applications
+1. Go to the AWS IAM console and create an IAM role called o3de-automation-tests which adds your own account as as a trusted entity and uses the "AdministratorAccess" permissions policy.
+2. Copy {engine_root}\scripts\build\Platform\Windows\deploy_cdk_applications.cmd to your engine root folder.
+3. Open a Command Prompt window at the engine root and set the following environment variables:  
+   Set O3DE_AWS_PROJECT_NAME=AWSAUTO  
+   Set O3DE_AWS_DEPLOY_REGION=us-east-1  
+   Set ASSUME_ROLE_ARN="arn:aws:iam::{your_aws_account_id}:role/o3de-automation-tests"  
+   Set COMMIT_ID=HEAD  
+4. Deploy the CDK applications for AWS gems by running deploy_cdk_applications.cmd in the same Command Prompt window.
+5. Edit AWS\common\constants.py to replace the assume role ARN with your own:  
+   arn:aws:iam::{your_aws_account_id}:role/o3de-automation-tests
+   
+## Run Automation Tests
+### CLI
+Open a Command Prompt window at the engine root and run the following CLI command:  
+python\python.cmd -m pytest {path_to_the_test_file} --build-directory {directory_to_the_profile_build}
+
+### Pycharm
+You can also run any specific automation test directly from Pycharm by providing the "--build-directory" argument in the Run Configuration.