RFR: 8272291: mark hotspot runtime/logging tests which ignore external VM flags

[Igor Ignatyev]

Hi all,

could you please review the patch that adds `@requires vm.flagless` to 23 hotspot runtime/logging tests that ignore external VM flags?

Thanks,
-- Igor

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Commit messages:
 - copyright year
 - 8272291

Changes: https://git.openjdk.java.net/jdk/pull/5075/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5075&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272291
  Stats: 42 lines in 23 files changed: 22 ins; 0 del; 20 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5075.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5075/head:pull/5075

PR: https://git.openjdk.java.net/jdk/pull/5075