[Failing Test]: Python GCP xlang fails if a node run two test concurrently

### What happened?

Happens during release branch verification:

Automated by mass comment,

https://ci-beam.apache.org/job/beam_PostCommit_Python_Xlang_Gcp_Direct_PR/78/
https://ci-beam.apache.org/job/beam_PostCommit_Python_Xlang_Gcp_Dataflow_PR/67/

running at the same time on jenkins-07 and both failed. Likely due to expansion service racing port

### Issue Failure

Failure: Test is flaky

### Issue Priority

Priority: 2 (backlog / disabled test but we think the product is healthy)

### Issue Components

- [X] Component: Python SDK
- [ ] Component: Java SDK
- [ ] Component: Go SDK
- [ ] Component: Typescript SDK
- [X] Component: IO connector
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- [ ] Component: Hazelcast Jet Runner
- [ ] Component: Google Cloud Dataflow Runner