[crac] RFR: 8377562: [CRaC] Add better logging to RemoteJmxTest [v2]

[Timofei Pushkin]

> Makes `RemoteJmxTest` log stderr of the child process.

Timofei Pushkin has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains eight additional commits since the last revision:

 - Ensure resources live long enough in some tests
 - Merge remote-tracking branch 'openjdk-crac/crac' into remote-jmx-test
 - Always capture output
 - Improve process synchronization in ImageScoreTest
 - Make timed waiting more robust
 - Merge remote-tracking branch 'openjdk-crac/crac' into remote-jmx-test
 - Refactor CracProcess to allow multi-waiting
 - Add better logging to RemoteJmxTest

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

Changes:
  - all: https://git.openjdk.org/crac/pull/295/files
  - new: https://git.openjdk.org/crac/pull/295/files/c86bc70b..c355f325

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=crac&pr=295&range=01
 - incr: https://webrevs.openjdk.org/?repo=crac&pr=295&range=00-01

  Stats: 3998 lines in 106 files changed: 2023 ins; 1519 del; 456 mod
  Patch: https://git.openjdk.org/crac/pull/295.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/295/head:pull/295

PR: https://git.openjdk.org/crac/pull/295