These tend to fail on GHA, where I believe the client is not
starting up fast enough before making requests. So wait on
the client agent first.
```
=== RUN TestDebug_CapturedFiles
operator_debug_test.go:422: serverName: TestDebug_CapturedFiles.global, clientID, 1afb00e6-13f2-d8d6-d0f9-745a3fd6e8e4
operator_debug_test.go:492:
Error Trace: operator_debug_test.go:492
Error: Should be empty, but was No node(s) with prefix "1afb00e6-13f2-d8d6-d0f9-745a3fd6e8e4" found
Failed to retrieve clients, 0 nodes found in list: 1afb00e6-13f2-d8d6-d0f9-745a3fd6e8e4
Test: TestDebug_CapturedFiles
--- FAIL: TestDebug_CapturedFiles (0.08s)
```
