[jdk11u-dev] RFR: 8206187: javax/management/remote/mandatory/connection/DefaultAgentFilterTest.java fails with Port already in use

[Goetz Lindenmaier]

I want to backport this as we see this issue in 11, too.

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Commit messages:
 - Backport cd36be42c2eb3eacdb3625e87510eb15acac3230

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/1070/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=1070&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8206187
  Stats: 82 lines in 1 file changed: 30 ins; 30 del; 22 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/1070.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/1070/head:pull/1070

PR: https://git.openjdk.java.net/jdk11u-dev/pull/1070