RFR: 8252545: runtime/ErrorHandling/TestHeapDumpOnOutOfMemoryError.java timed out

[Harold Seigel]

Please review this change to fix JDK-8252545.  The fix uses -Xm128m to reduce the size of the heap, lessening the amount  of time needed to get an OutOfMemoryError exception.  The fix also simplifies things by including test TestHeapDumpOnOutOfMemoryErrorInMetaspace.java with this test.  (Hopefully, this won't increase the likelihood of timeouts.)

The fix was tested by running Mach5 tier 3 on Linux, Mac OS, and Windows, and running the test 100 times on Linxu x64 with the same JVM options that were used when the test last timed out: "-XX:MaxRAMPercentage=6 -XX:+UseParallelGC -XX:+UseNUMA".

Thanks, Harold

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Commit messages:
 - 8252545: runtime/ErrorHandling/TestHeapDumpOnOutOfMemoryError.java timed out

Changes: https://git.openjdk.java.net/jdk/pull/2226/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2226&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252545
  Stats: 36 lines in 3 files changed: 3 ins; 30 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2226.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2226/head:pull/2226

PR: https://git.openjdk.java.net/jdk/pull/2226