RFR: 8370649: Add intermittent tag for gc/shenandoah/generational/TestOldGrowthTriggers.java

[SendaoYan]

Hi all,

Test gc/shenandoah/generational/TestOldGrowthTriggers.java intermittent fails "'Trigger (Old): Old has overgrown' missing from stdout/stderr" with default JVM options by fastdebug build on linux-aarch64. The failure probability about 1/100.

Should we add '@key intermittent' tag for this test until the root cause has been fixed. The '@key intermittent' tag make some test infrasture disable or rerun this test automaticly when it's intermittent fails.

Test-fix only. no risk.

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Commit messages:
 - 8370649: Add intermittent tag for gc/shenandoah/generational/TestOldGrowthTriggers.java

Changes: https://git.openjdk.org/jdk/pull/27986/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27986&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370649
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27986.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27986/head:pull/27986

PR: https://git.openjdk.org/jdk/pull/27986