[jdk11u-dev] RFR: 8286962: java/net/httpclient/ServerCloseTest.java failed once with ConnectException

[Goetz Lindenmaier]

I backport this for parity with 17.0.7-oracle.

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Commit messages:
 - Backport 13d4ddc35b1a64e2d882c7dcd554b5aee2720c53

Changes: https://git.openjdk.org/jdk11u-dev/pull/1698/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1698&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8286962
  Stats: 20 lines in 1 file changed: 12 ins; 2 del; 6 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1698.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1698/head:pull/1698

PR: https://git.openjdk.org/jdk11u-dev/pull/1698