RFR: 8266188: mark hotspot compiler/cpuflags tests which ignore VM flags

[Igor Ignatyev]

Hi all,

could you please review this small and trivial patch that adds `@requires vm.flagless` to `compiler/cpuflags ` tests that ignore VM flags?

Thanks,
-- Igor

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Commit messages:
 - copyright year
 - 8266190

Changes: https://git.openjdk.java.net/jdk/pull/3752/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3752&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8266188
  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3752.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3752/head:pull/3752

PR: https://git.openjdk.java.net/jdk/pull/3752