### What would you like to happen? Current test configuration causes confusion for authors of new suites and makes some test suites run twice (see discussions on: https://github.com/apache/beam/pull/28571 https://github.com/apache/beam/pull/28534) ### Issue Priority Priority: 2 ### Issue Components - [X] Component: Python SDK - [ ] Component: Java SDK - [ ] Component: Go SDK - [ ] Component: Typescript SDK - [ ] Component: IO connector - [ ] Component: Beam examples - [ ] Component: Beam playground - [ ] Component: Beam katas - [ ] Component: Website - [ ] Component: Spark Runner - [ ] Component: Flink Runner - [ ] Component: Samza Runner - [ ] Component: Twister2 Runner - [ ] Component: Hazelcast Jet Runner - [ ] Component: Google Cloud Dataflow Runner