RFR: 8290264 : java/util/concurrent/locks/Lock/OOMEInAQS.java fails with "exit code: 0"

[Doug Lea]

This test now conforms to jtreg rules about not using System.exit to cover untested OutOfMemoryErrors

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

Commit messages:
 - Avoid System.exit in jtreg tests

Changes: https://git.openjdk.org/jdk/pull/9491/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9491&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290264
  Stats: 19 lines in 1 file changed: 15 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/9491.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9491/head:pull/9491

PR: https://git.openjdk.org/jdk/pull/9491