Description

Update integration test readme with the following:

1. Change the file from README to README.md so that markdown works.
2. Update the steps for running the integration test to ones that actually work.
3. Add a note on replication test cases that are not currently working due to issues in the tests themselves.

GitHub Issues

List the GitHub issues impacted by this PR:

Checklist:

• Have you run format,vet & lint checks against your submission?
• Have you made sure that the code compiles?
• Did you run the unit & integration tests successfully?
• Have you maintained at least 90% code coverage?
• Have you commented your code, particularly in hard-to-understand areas
• Have you done corresponding changes to the documentation
• Did you run tests in a real Kubernetes cluster?
• Backward compatibility is not broken

How Has This Been Tested?

This is only a README change. Tested the steps in the README and confirmed that I am able to run the integration tests.