RFR: 8271886: mark hotspot runtime/InvocationTests tests which ignore external VM flags

[Igor Ignatyev]

Hi all,

could you please review this patch that adds `@requires vm.flagless` to all the `runtime/InvocationTests` tests as they ignore external VM flags?

Thanks,
-- Igor

-------------

Commit messages:
 - copyright year
 - 8271886

Changes: https://git.openjdk.java.net/jdk/pull/4997/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4997&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8271886
  Stats: 9 lines in 5 files changed: 5 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4997.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4997/head:pull/4997

PR: https://git.openjdk.java.net/jdk/pull/4997