RFR: 8314242: Update applications/scimark/Scimark.java to accept VM flags

[Leonid Mesnik]

Test applications/scimark/Scimark.java is a small stress test which currently ignores VM flags and is vm.flagless.
This fix update it to accept all flags.

Tested by running tier1 and this test with additional VM flags.

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Commit messages:
 - 8314242: Update applications/scimark/Scimark.java to accept VM flags

Changes: https://git.openjdk.org/jdk/pull/15280/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15280&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314242
  Stats: 5 lines in 1 file changed: 2 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/15280.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15280/head:pull/15280

PR: https://git.openjdk.org/jdk/pull/15280