[jdk8u-dev] RFR: 8048215: [TESTBUG] java/lang/management/ManagementFactory/ThreadMXBeanProxy.java Expected non-null LockInfo [v2]

[SendaoYan]

> Hi all,
>   This is backport of [JDK-8048215](https://bugs.openjdk.org/browse/JDK-8048215). This PR try to fixed the intermitent failure. The change has been verifed. Only change the testcase, no risk.

SendaoYan has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'openjdk:master' into jbs8048215
 - 8048215: [TESTBUG] java/lang/management/ManagementFactory/ThreadMXBeanProxy.java Expected non-null LockInfo
   
   Ensure the target thread has reached wait() before inspecting it
   
   Reviewed-by: mchung, dfuchs, jcbeyler

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

Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/504/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/504/files/fba26ac1..04f8edb1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=504&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=504&range=00-01

  Stats: 6215 lines in 54 files changed: 1393 ins; 3127 del; 1695 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/504.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/504/head:pull/504

PR: https://git.openjdk.org/jdk8u-dev/pull/504