resume008 test is failing because of an unexpected Cleaner-1 thread being 
created:

` # ERROR: debugger> ERROR: ThreadStartEvent is not for expected thread: 
Cleaner-1 `

Threads like Cleaner-1 are suppose to be filtered out so the test doesn't see 
them. Cleaner-1 had been missed by the filter since it never turned up in 
testing before. For some reason it started turning up 3 days ago. I'm not sure 
why, but it doesn't really matter since it should be filtered.

Testing

- Ran test 200 times. Before fix failed 13 times in 200 runs.
- Ran  all the tier5 svc tests, which is where this issue has been turning up.

-------------

Commit messages:
 - oops. thread name is Cleaner-<n>, not Common-<n>
 - filter out Cleaner-<n> threads

Changes: https://git.openjdk.org/jdk/pull/14048/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14048&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308187
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14048.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14048/head:pull/14048

PR: https://git.openjdk.org/jdk/pull/14048

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