feat: Adding E2E log test for RDS database interations

[jerry-shao]

Issue description:
In previous PRs, we allowed the sample app in e2e test to query an RDS database and asserts metrics collected by Application Signals Agent. This PR adds additional test cases for EMF logs.

Description of changes:
This change introduces the expected EMF log templates and asserts them after calling /mysql API.

Test run: https://github.com/jerry-shao/aws-application-signals-test-framework/actions/runs/10089987613/job/27898486859

Ensure you've run the following tests on your changes and include the link below:
To do so, create a test.yml file with name: Test and workflow description to test your changes, then remove the file for your PR. Link your test run in your PR description. This process is a short term solution while we work on creating a staging environment for testing.

NOTE: TESTS RUNNING ON A SINGLE EKS CLUSTER CANNOT BE RUN IN PARALLEL. See the needs keyword to run tests in succession.

• Run Java EKS on e2e-playground in us-east-1 and eu-central-2
• Run Python EKS on e2e-playground in us-east-1 and eu-central-2
• Run metric limiter on EKS cluster e2e-playground in us-east-1 and eu-central-2
• Run EC2 tests in all regions
• Run K8s on a separate K8s cluster (check IAD test account for master node endpoints; these will change as we create and destroy clusters for OS patching)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.