[jdk11u-dev] RFR: 8266153: mark hotspot compiler/onSpinWait tests which ignore VM flags

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

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Commit messages:
 - Backport 30b13540855dfdb9b39695eb8218b13e64b34894

Changes: https://git.openjdk.org/jdk11u-dev/pull/2879/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2879&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8266153
  Stats: 8 lines in 2 files changed: 4 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2879.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2879/head:pull/2879

PR: https://git.openjdk.org/jdk11u-dev/pull/2879