RFR: 8372246: LogOutputList gtests should not use LogConfiguration LogOutputs [v2]

[Axel Boldt-Christmas]

> A handful of `LogOutputList` tests uses `LogConfiguration::Std[out|err]Log` LogOutputs in its tests.
> However these are not setup unless we run the tests in VM mode.
> 
> I suggest we add some dummy `LogOutputs` for `StdoutLog` and `StderrLog` which these tests can use, so they are not depending being a VM test.

Axel Boldt-Christmas has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:

 - Merge branch 'JDK-8372241' into JDK-8372246
 - LogOutputList gtests should not use LogConfiguration LogOutputs

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Changes: https://git.openjdk.org/jdk/pull/28416/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28416&range=01
  Stats: 27 lines in 2 files changed: 10 ins; 4 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/28416.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28416/head:pull/28416

PR: https://git.openjdk.org/jdk/pull/28416