[jdk8u-dev] RFR: 8035395: sun/management/jmxremote/startstop/JMXStartStopTest.java fails intermittently: Port already in use

[ktakakuri]

Hi all,

This is a backport of JDK-8035395: sun/management/jmxremote/startstop/JMXStartStopTest.java fails intermittently: Port already in use.
The JMXStartStopTest.java test failures reported in this issue also occur in JDK8.
This backport improves testing to use a dynamically allocated port.

testing: jdk/test/sun/management/jmxremote/startstop/JMXStartStopTest.java

With this fix alone, the test remains unstable.
Backporting with JDK-8035395 makes JMXStartStopTest.java more stable.

Thank you.

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Commit messages:
 - Backport 70f2238ba9a81ba0bb3fe6cbd98a553009992ecb

Changes: https://git.openjdk.org/jdk8u-dev/pull/429/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=429&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8035395
  Stats: 98 lines in 1 file changed: 52 ins; 2 del; 44 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/429.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/429/head:pull/429

PR: https://git.openjdk.org/jdk8u-dev/pull/429