RFR: JDK-8305962: update jcstress to 0.17

[Leonid Mesnik]

The fix changes jcstress version and update some parameters used by the jtreg wrapper.

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Commit messages:
 - cp fixed
 - JDK-8305962: update jcstress to 0.17

Changes: https://git.openjdk.org/jdk/pull/14742/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14742&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305962
  Stats: 61 lines in 5 files changed: 50 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/14742.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14742/head:pull/14742

PR: https://git.openjdk.org/jdk/pull/14742