[jdk17u-dev] RFR: 8314426: runtime/os/TestTrimNative.java is failing on slow machines

[Aleksey Shipilev]

Clean backport, further stabilization of the test.

Additional testing:
 - [x] 100+ iterations of affected test on Linux x86_64 fastdebug

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Depends on: https://git.openjdk.org/jdk17u-dev/pull/1662

Commit messages:
 - Backport 20e94784c9f7c30e95550c72aedb5e986a153114

Changes: https://git.openjdk.org/jdk17u-dev/pull/1687/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1687&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314426
  Stats: 6 lines in 1 file changed: 3 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1687.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1687/head:pull/1687

PR: https://git.openjdk.org/jdk17u-dev/pull/1687