jmx-dev RFR: 8354407: Test com/sun/management/OperatingSystemMXBean/GetProcessCpuLoad.java still fails on Windows

[Kevin Walls]

This is hard to reproduce, and at first I'd only seen -1 returned on the first calls to mbean.getProcessCpuLoad().
But eventually I observed a -1 at any time, including in middle of the iterations, or on the last iteration which makes the current test fail.

Should fail on Windows only if we only ever see -1 returned from getProcessCpuLoad().
Remove the "exclusiveAccess.dirs=." (JDK-8353231 adding "exclusiveAccess.dirs=." did not fix this.)

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Commit messages:
 - 8354407: Test com/sun/management/OperatingSystemMXBean/GetProcessCpuLoad.java still fails on Windows

Changes: https://git.openjdk.org/jdk/pull/24961/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24961&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354407
  Stats: 35 lines in 2 files changed: 5 ins; 24 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/24961.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24961/head:pull/24961

PR: https://git.openjdk.org/jdk/pull/24961