[jdk17u-dev] RFR: 8271904: mark hotspot runtime/ClassFile tests which ignore external VM flags

[Goetz Lindenmaier]

I backport this for 17.0.10-oracle parity.

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Commit messages:
 - Backport e882087f7abb21eb776af8c14bc62e7624ebb7f3

Changes: https://git.openjdk.org/jdk17u-dev/pull/1768/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1768&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8271904
  Stats: 6 lines in 4 files changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1768.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1768/head:pull/1768

PR: https://git.openjdk.org/jdk17u-dev/pull/1768